Sandpiper Company has 15,000 shares of cumulative preferred 2% stock, $50 par and 50,000 shares of $5 par common stock. The following amounts were distributed as dividends:

20Y1 $37,500
20Y2 12,000
20Y3 45,000
Determine the dividends per share for preferred and common stock for each year.

Answers

Answer 1

The dividends per share for the preferred stock are $2.50, $0.80, and $3.00 for 20Y1, 20Y2, and 20Y3, respectively.

The dividends per share for the common stock are $0.75, $0.24, and $0.90 for 20Y1, 20Y2, and 20Y3, respectively.

How to determine the dividends per share for preferred and common stock for each year?

To determine the dividends per share for preferred and common stock, we need to divide the total dividends by the number of shares outstanding for each type of stock.

For the preferred stock:

20Y1: $37,500 ÷ 15,000 shares = $2.50 per share

20Y2: $12,000 ÷ 15,000 shares = $0.80 per share

20Y3: $45,000 ÷ 15,000 shares = $3.00 per share

For the common stock:

20Y1: $37,500 ÷ 50,000 shares = $0.75 per share

20Y2: $12,000 ÷ 50,000 shares = $0.24 per share

20Y3: $45,000 ÷ 50,000 shares = $0.90 per share

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Related Questions

Use the Quotient Rule to find the derivative of the given function Simplify your answers. 31. f(x) =x^4 +1/x^3 32. f(x) = x^5 -1/x^2 33. f(x) = x+1/x-134. f(x) = x - 1/x + 1 35. f(x) = 3x + 1/2+x36. f(x) = x+1/ 2x^2 +1 37. f(t) = t^2 -1/t^2 +1 38. f(t) = t^2 + 1/ t^2 - 1

Answers

By the quotient rule the derivative of all functions can be found in an easy way,

(1) [tex]f'(x)=\frac{x^6+128x^3-3x^2}{(x^3+32)^2}[/tex]    

(2)  [tex]f'(x)=\frac{5}{(2+x)^2}[/tex]

(3)  [tex]f'(t)=\frac{4t}{(t^2+1)^2}[/tex]

The Quotient Rule in calculus is a technique for figuring out a function's derivative (differentiation) as the ratio of two differentiable functions. It is a formal rule applied to issues involving differentiation where one function is split in half by another function. The definition of the limit of the derivative is followed by the quotient rule. Keep in mind that the bottom function is where the quotient rule starts and where it finishes.

The quotient rule is similar to the product rule. A Quotient Rule is stated as the ratio of the quantity of the denominator times the derivative of the numerator function minus the numerator times the derivative of the denominator function to the square of the denominator function. In short, the quotient rule is a way of differentiating the division of functions or the quotients

We have the functions

(1) [tex]f(x)=\frac{x^4+1}{x^3+32}[/tex]

derivative with respect to x by the quotient rule.

[tex]f'(x)=\frac{(x^3+32)(4x^3)-(x^4+1)(3x^2)}{(x^3+32)^2}\\\\f'(x)=\frac{4x^6+128x^3-3x^6-3x^2}{(x^3+32)^2}\\\\f'(x)=\frac{x^6+128x^3-3x^2}{(x^3+32)^2}[/tex]

2) derivative with respect to x of the below function

[tex]f(x)=\frac{3x+1}{2+x}\\\\f'(x)=\frac{(x+2)(3)-((3x+1))}{(2+x)^2}\\\\f'(x)=\frac{5}{(2+x)^2}[/tex]

3)

[tex]f(t)=\frac{t^2-1}{t^2+1}[/tex]

derivative with respect to t,

[tex]f'(t)=\frac{(t^2+1)(2t)-(t^2-1)(2t)}{(t^2+1)}\\\\f'(t)=(2t^3+2t-2t^3+2t)/(t^2+1)^2\\\\f'(t)=4t/(t^2+1)^2[/tex]

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I need help with this question

Answers

1) Note that the fire advanced  2697.55 ft. in the 6 minutes that the ranger was observing it.

2) the speed in MILES/HR that the fire advanced towards the ranger is 5.11 miles per hour. Note that this prompt is a unit conversion prompt.

What is the rationale for the above problem?

1) Let 'd' represent the distance that the fire advance during the 6 minutes.

d = 3334/(tan(10.5)) - 3334 (tan (12.3)

d = (3334/0.18533904493) - (3334 /0.21803526043)

d = 17988.6542593289 - 15291.1047205155

d = 2697.5495388134

d [tex]\approx[/tex]  2697.55 ft.

2) to compute the speed, in Miles/ Hours, we need to first convert both distance and time into Miles and Hours respectively.

Recall that:

1 foot = 0.000189394 miles; thus,

2697.55 = 0.5108997847 Miles

Also, recall that

1 minute = 0.0166667 hours.

Thus, 6 minutes in hours =

0.0166667  * 6

= 0.1000002 hours.

Since speed = distance/time

Thus, the speed  = 0.5108997847/ 0.1000002

= 5.1089876290 thus,

Speed [tex]\approx[/tex] 5.11 miles/Hour

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What was the difference between the highest guess and the lowest guess? Write your answer as a fraction, mixed number, or whole number

Answers

The difference between the highest guess and the lowest guess, in the whole number, is 120.

What is subtraction?

Subtraction is a mathematical operation. Which is used to remove terms or objects in the expression.

Given:

A table that shows the relationship between the guessed amount and the number of weeks.

Week          Amount

1                      120

2                      140

3                      160

4                      240

Here, the highest guess is 240.

And the lowest guess is 120.

The difference  between the highest guess and the lowest guess,

= 240 - 120

= 120

120 is a whole number.

Therefore, 120 is the required number.

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The complete question:

A table that shows the relationship between the guessed amount and the number of weeks.

Week          Amount

1                      120

2                      140

3                      160

4                      240

What was the difference between the highest guess and the lowest guess? Write your answer as a fraction, mixed number, or whole number

What informational text is an expression of an opinion on a subject?
A. Autobiography
B. Essay
C. Biography
D. Editorial

Answers

The informational text that is an expression of an opinion on a subject is an essay. That is option B

What is an essay?

An essay is defined as the piece of writing or a literary write up that is used to represent the writer's opinion about a subject that is under study.

There are different types of easy written that includes the following:

argumentative essay,expository essay,narrative essay, and descriptive essay.

Therefore, easy is an informational text that is an expression of an opinion on a subject.

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2.
Solve for x. Round to one
decimal place (nearest
tenth).
11
X
45°

Answers

5 is the measure of the value of x from the diagram

Solving triangles using trigonometry identity

The given diagram is a triangle with the following parameters

Opposite = 5

Adjacent  = x

Using the trigonometry identity

tan theta = opp/adj

tan45 = 5/x

x = 5/tan45

x = 5/1

x = 5

Hence the measure of the value of x is 5.

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everybody help i just need to pass today mwa

Answers

Answer:

20

Step-by-step explanation:

Easiest way to solve is to consider the formula for the area of the trapezoid, which is 0.5h(a+b), where h is the altitude and a and b are the two bases.

Here we know the area, the altitude and one base so let's sub these in to find the other base:

92=0.5*8*(3+b)

92=4(3+b)

23=4+b

b=20

NEED HELP FAST I WILL GIVE THE BRAINLIEST AND 15 pts

Answers

The length of PJ in the right triangle PNJ is determined as 24 inches.

How to calculate the length of PJ?

The length of PJ is calculated by applying Pythagoras theorem as follows;

PJ² = PN² + NJ²

The given parameters;

NJ = 10 in

The length of PN = The length of PL = The length of PM

PL = 3x + 4

PM = 6x - 14

3x + 4 = 6x - 14

3x - 6x = -14 - 4

-3x = -18

x = 18/3

x = 6

Length PN = 3x + 4

PN = 3(6) + 4

PN = 22

Length PJ is calculated as follows;

PJ² = PN² + NJ²

PJ² = 22² + 10²

PJ² = 584

PJ = √584

PJ = 24.17 in

PJ ≈ 24 in

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Consider two connected tanks shown below. Tank 1 initially contains 300 L of brine (with unknown concentration), while tank 2 initially contains 300 L of pure water. Pure water flows into tank 1 at the rate of 500 L/hr into tank 1. The mixture in tank 1 flows into tank 2 at the rate of 500 L/hr, and the mixture in tank 2 leaves tank 2 at the same rate.
Describe how the amount of salt in tank 1 and tank 2 change over time.
Let x1(t) and x2(t) be the mass (in oz) of salt in tank 1 and tank 2, respectively. Solve x1(t) and x2(t).
Determine when the amount of salt in tank 2 reaches its maximum. (Note that the answer does not depend on the initial concentration in tank 1!)

Answers

We have also determined when the amount of salt in tank 2 reaches its maximum, which is when[tex]e^{t/180} = 6, \text{or}[/tex] t ≈ 1,080 minutes.

A mixture is a combination of two or more substances that are physically intermingled with each other, but not chemically bonded.

To determine when the amount of salt in tank 2 reaches its maximum, we can set the derivative of x2(t) with respect to time to zero and solve for t.

[tex]dx_2(t)/dt = (x_1(t)/500) * 500 * (1/180) * e^{t/180} - (x_2(t)/300) * 500 * (1/180) * e^{t/180} = 0[/tex]

Simplifying, we get:

[tex]x_1(t) * e^{-t/180} - (300/5) = x_2(t)[/tex]

Substituting the expression for x2(t) in terms of x1(t), we get:

[tex]x_1(t) * e^{-t/180} - (300/5) = (x_1(t) - (300/5)) * e^{t/18} + (300/5)[/tex]

Simplifying, we get:

[tex]2x_1(t) * e^{-t/180} = (600/5) * e^{t/180}[/tex]

Dividing by [tex]e^{t/180}[/tex] on both sides, we get:

[tex]2x_1(t) * e^{-t/180 - t/180} = (600/5)[/tex]

Simplifying, we get:

[tex]x_1(t) = (300/5) * e^{t/180}[/tex]

Substituting this value of x₁(t) in the expression for x₂(t), we get:

[tex]x_2(t) = (300/5) * (e^{t/180} - 1)[/tex]

This expression for x₂(t) gives us the amount of salt in tank 2 at any time t, and we can see that it increases with time until it reaches its maximum value of 300 oz. This occurs when [tex]e^{t/180}=6,[/tex], or t ≈ 1,080 minutes (or 18 hours), which is independent of the initial concentration in tank 1.

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Write xxxxyyyzzzzz in exponential form.

Answers

The exponential form of xxxxyyyzzzzz is [tex]x^4 y^3 z^5[/tex].

What are exponential functions?

When the expression of function is such that it involves the input to be present as exponent (power) of some constant, then such function is called exponential function. There usual form is specified below. They are written in several such equivalent forms.

For example, , where a is a constant is an exponential function.

Given that

The function with 3 variables xxxxyyyzzzzz

Now,

xxxx=[tex]x^4[/tex]

yyy=[tex]y^3[/tex]

zzzzz= [tex]z^5[/tex]

Substituting the following values in the function

= [tex]x^4 y^3 z^5[/tex].

Therefore, the exponential function will be  [tex]x^4 y^3 z^5[/tex].

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david buys fruits and vegetables wholesale and retails them at davids produce. one of the more difficult decisions is the amount of bananas to buy. let us make some simplifying assumptions, and assume that david purchases bananas once a week at 10 cents per pound and retails them at 30 cents per pound during the week. bananas that are more than a week old are too ripe and are sold for 5 cents per pound. suppose the demand for the good bananas follows the same distribution as d given in the first question. assume that david buys 8 pounds of banana every week.

Answers

The expected profit per week for David is $4.25, with a standard deviation of $4.28.

Based on the given information, David purchases 8 pounds of bananas every week at 10 cents per pound, which costs $0.80 per week. The demand for good bananas follows the same distribution as d given in the first question. Using the probabilities given in d, we can calculate the expected revenue from selling the bananas. The expected revenue from selling good bananas is (0.30.6 + 0.050.3) * 8 = $1.56. The expected revenue from selling bad bananas is 0.05 * 8 = $0.40.

Thus, the expected total revenue is $1.96. The expected profit is the difference between the total revenue and the cost of purchasing the bananas, which is $1.16. The standard deviation of the profit can be calculated using the formula for the standard deviation of a linear combination of random variables, which gives a standard deviation of $4.28.

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Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card and B be the analogous event for MasterCard. Suppose that P(A) = 0.7 and P(B) = 0.4.
A. Could it be the case that P(A ∩ B) = 0.5? Pick one:
i. Yes, this is possible. Since B is contained in the event A ∩ B, it must be the case that P(B) ≤ P(A ∩ B) and 0.5 > 0.4 does not violate this requirement.
ii. Yes, this is possible. Since A ∩ B is contained in the event B, it must be the case that P(B) ≤ P(A ∩ B) and 0.5 > 0.4 does not violate this requirement.
iii. No, this is not possible. Since B is equal to A ∩ B, it must be the case that P(A ∩ B) = P(B). However 0.5 > 0.4 violates this requirement.
iiii. No, this is not possible. Since B is contained in the event A ∩ B, it must be the case that P(A ∩ B) ≤ P(B). However 0.5 > 0.4 violates this requirement.
v. No, this is not possible. Since A ∩ B is contained in the event B, it must be the case that P(A ∩ B) ≤ P(B). However 0.5 > 0.4 violates this requirement.

Answers

A) No, P(A ∩ B) = 0.5, is not possible. In this case that P(A ∩ B) ≤ P(B). So, the correct choice is option (iii).

B) Probability that the selected student has at least one of these two types of cards is 0.8.

The probability of an event has different properties. If two events take place at the simultaneously, then we calculate their joint probabilities. The individual probabilities are called the marginal probabilities. Let us consider two events :

A : Event that the selected student has Visa card

B : Event that selected student has Master Card

Probability of occurrence of event A, P(A) =0.7

Probability of occurrence of event B, P(B) =0.4

A) P(A ∩ B) = 0.5 ,

No, this is not possible. Since, B is contain in the event (A ∩ B), it must be the case that

P( A ∩ B)≤ P(B). However, 0.5 > 0.4, violate this requirement. So, correct choice is option (iii).

B) Now, it is specific that the probability A and B is 0.3. The probability that the selected student has atleast one of these two types of cards will be, P(A∪B)

= P(A) + P(B) − P(A∩B)

= 0.7 + 0.4v− 0.3 = 0.8

So the probability is 0.8.

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Complete question:

Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card and B be the analogous event for MasterCard. Suppose that P(A) = 0.7 and P(B) = 0.4.

A) Could it be the case that P(A ∩ B) = 0.5? Pick one:

i. Yes, this is possible. Since B is contained in the event A ∩ B, it must be the case that P(B) ≤ P(A ∩ B) and 0.5 > 0.4 does not violate this requirement.

ii. Yes, this is possible. Since A ∩ B is contained in the event B, it must be the case that P(B) ≤ P(A ∩ B) and 0.5 > 0.4 does not violate this requirement.

iii. No, this is not possible. Since B is equal to A ∩ B, it must be the case that P(A ∩ B) = P(B). However 0.5 > 0.4 violates this requirement.

iiii. No, this is not possible. Since B is contained in the event A ∩ B, it must be the case that P(A ∩ B) ≤ P(B). However 0.5 > 0.4 violates this requirement.

v) No, this is not possible. Since A ∩ B is contained in the event B, it must be the case that P(A ∩ B) ≤ P(B). However 0.5 > 0.4 violates this requirement.

B) From now on, suppose that P(A ∩ B)

= 0.3. What is the probability that the selected student has at least one of these two types of cards?

A pyramid has a triangular base with side lengths 20, 20, and 24. The three edges of the pyramid from the three corners of the base to the fourth vertex of the pyramid all have length 25. The volume of the pyramid is myn, where m and n are positive integers, and n is not divisible by the square of any prime. Find m + n. n

Answers

The volume of the pyramid is mn, where m and n are positive integers, and n is not divisible by the square of any prime then m+n is 803.

Let the triangular base be ΔABC with

AB = 24, Altitude to the side AB is 16

Area of ΔABC is 24x16/2 = 192

Let fourth vertex of Tetrahedron be P and let the midpoint of AB be M

ΔABC will pass through circumcenter of Δ ABC which we will call O

OM + OC = 16

OM = d

d = √d² + 144 = 16

2d² + 2d√d² + 144 = 112

2d(d + √d² + 144) = 112

d = 7/2

Now, we find √d² + 144 = 25/2

Theorem , on the triangle AOP, BOP, COP

25² = h² + (25/2)²

625 = h² + 625/4

h = 25√3/2

Finally the formula for volume of Pyramid from

V = Ah/3

= 192 (25√3/2) / 3

= 800√3

m + n = 800 + 3

m + n = 803

Therefore, the value of m+n is 803.

The volume of a aggregate depends upon the type of aggregate’s base, whether it's a triangle, square or cube. A aggregate is a polyhedron figure which has only one base.

The base of the aggregate is a poly sided figure. Hence, the formula to find not only volume but also the face area of a aggregate will be grounded on the structure of its base and height of the aggregate.

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which has the lowest unit rate
$0.27: 1
$ 0.18:1
$0.21:1

Answers

I think b I don’t really know

Evaluate 3y - x if x = 4 and y = 3

Answers

3(3)-4 = 5


Hope this helped

Answer this question

Answers

Answer:

x+22

Step-by-step explanation:

3(x+4)+2(5-x)

3x+12 +2(5-x)

3x+12+10-2x

1x+12+10

1x+22

x+22

3/8 + (-4/5)+(-3/8)+5/4

Answers

Answer : 9/20 or 0.45

the walls are fixed to the ground which wall is the most stable when the same lateral force is applied

Answers

The wall that is most stable when the same lateral force is applied is the wall that is anchored to the ground with the most support.

The wall that is anchored to the ground with the most support is the one that is most stable when the same lateral force is applied. This could include walls that are reinforced with steel beams or are built with heavier materials such as brick or concrete.

Lateral force is a force that acts perpendicular to the direction of motion of an object. It is usually caused by friction, gravity, or air resistance. The most common example of a lateral force is the force of friction between two objects when they are in contact.

This force can cause an object to move in a different direction than the one it was initially moving in. Lateral force can also cause an object to rotate or change its direction of motion entirely.

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A questionnaire provides 58 Yes, 42 No, and 20 no-opinion answers. a. In the construction of a pie chart, how many degrees would be in the section of the pie showing the Yes answers? b. How many degrees would be in the section of the pie showing the No answers?

Answers

The tax money given by Andy is equivalent to $151.83.

What is pie chart?

A pie chart is used to describe the data converted to equivalently proportional circle sectors.

Given is that a questionnaire provides 58 Yes, 42 No, and 20 no-opinion answers.

Total opinion polls - 58 + 42 + 20 = 120.

120 opinions cover 360°.

1 opinion will cover - (360/120)°.

58 opinions will cover - (360/120 x 58)° = 3 x 58 = 174°

Therefore, the 58 yes opinions will cover 174 degrees.

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I need answer now 20 point d

Answers

I believe it's A because the coordinates of C is (-5, 3)
Hope this helps

a

if you flip it the c point will be the opposite of the original coordinates

Please help me,this is proportionality theorems

Answers

Answer:

Below

Step-by-step explanation:

Line DE grows to 5 as you move to the midpoints of  BC  and AC....

   go the the other half of the way to the end AB and it grows another 5  for a total of 10

A set of scores ranges from a high of X = 96 to a low of X = 27. If
these scores are placed in a grouped frequency distribution table
with an interval width of 10 points, the top interval in the table
would be

Answers

Answer: 90-99

Step-by-step explanation:

The top interval in the table would be 90-99. This is because the highest score (X = 96) falls within this interval, and the interval width is 10 points, which means that all scores between 90 and 99 would be included in this interval.

find the volume of a pyramid with height 28 and rectangular base with dimensions 2 and 7 using integration

Answers

The volume of a pyramid can be calculated using integration is [tex]V = (1/3)(7*282 - 2*282) = 224 cubic units..[/tex]

The formula for the volume of a pyramid with a rectangular base with dimensions l and w, and height h is given by V = (lwh)/3. Using this formula, the volume of a pyramid with a rectangular base with dimensions 2 and 7 and height 28 can be calculated to be 224 cubic units.

To calculate this using integration, we can use the formula V = (1/3)∫b a y2dx, where a and b are the lower and upper limits of the rectangular base, and y is the height of the pyramid. In this case, a = 2, b = 7, and y = 28. Therefore, V = (1/3)(7*282 - 2*282) = 224 cubic units.

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Ms Jackson has 35 students in her class this is 9 more students than me Lopez has.
how many students does Miss Lopez have choose the correct equation and answer

Answers

Answer:

x+9=35

x = 26

Miss Lopez has 26 students in her class.

Step-by-step explanation:

Select the correct answer.
Which of the following is a reason for needing to acquire a 1040X form?
O A.
O B.
O C.
to report income from interest
O D. to correct a bank routing number on a tax return
to request additional withholding from paychecks
to increase the number of allowances claimed

Answers

The reason for needing to acquire a 1040X form is D. to correct a bank routing number on a tax return

What is income tax?

Income tax is a tax applied on individuals or entities concerning income or profit earned by them.

An IRS Form 1040-X is a form that refers to filled by citizens of a country who wish to make some changes in their tax return.

Also, to report payments received and payments due from the paying students.

Therefore, from the given option, reason for needing an 1040x form is to correct a bank routing number on a tax return

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ALL I NEED IS LETTER A PLEASE HELP I GIVE BRAINLIEST

Answers

Answer:

a is b+g=30.

Step-by-step explanation:

You don't know how many boys and girls so you can only assume that together, they add up to 30. so using the equation b+g=30 you can say that the number of boys (B) and the number of girls (G) combined equal to 30.

Ruby read 7 books in 14 months. What was her rate of reading in books per month?

Answers

Short Answer:

Ruby's rate if reading the books is:

2 months per book.

Long Answer:

If you look at it this way, two months per book means that by the time 14 months come you should have 7 books read.

Easy check to verify:

7 (books) X( mutltiply)  2(# of books)  = 14 (total of months) - This shows that the number lead back to the original numbers

Hope this helps :)

Find an autonomous differential equation with all of the following properties:equilibrium solutions at y=0 and y=3,y' > 0 for 0 y' < 0 for -inf < y < 0 and 3 < y < infdy/dx =

Answers

An autonomous differential equation with equilibrium solutions at y=0 and y=3, and y' > 0 for 0 < y < 3 and y' < 0 for -inf < y < 0 and 3 < y < inf is dy/dx = 3y(1-y).

An autonomous differential equation is a type of ordinary differential equation that does not depend on any other variable but time. It has a single variable, usually denoted as y, and a single independent variable, usually denoted as t or x. An autonomous differential equation with equilibrium solutions at y=0 and y=3, and y' > 0 for 0 < y < 3 and y' < 0 for -inf < y < 0 and 3 < y < inf is dy/dx = 3y(1-y). This equation will have two equilibrium solutions at y=0 and y=3. The derivative of the equation, y’, is greater than 0 for 0 < y < 3, which means that the equation is increasing in this range. The derivative of the equation is less than 0 for -inf < y < 0 and 3 < y < inf, which means that the equation is decreasing in this range. This equation is a type of logistic equation and is often used to model population growth. It is also used to describe other phenomena such as the spread of an epidemic or the number of species in an ecosystem. Using the initial conditions y(0) = 2 and y(1) = 3, we can calculate the values of y at other time points using the equation dy/dx = 3y(1-y). At t=0.5, the value of y is y(0.5) = 2.5; at t=1.5, the value of y is y(1.5) = 2.875; and at t=2.5, the value of y is y(2.5) = 2.9375.

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Determine whether or not each of the following continuous-time signals is periodic. If the signal is periodic, determine its fundamental period. (a) x(t) 3 cos(4t (c) x(t) = [cos(2t--)]2 (d) x(t) &'{cos(4m)u(t)} + 풀) (b) x(t) e/m-I)

Answers

The signal, (a) x(t) = 3cos(4t) is periodic with period T = pi/2. To see this, we can compute:

x (t + T) = 3cos (4(t + pi/2)) = 3cos (4t + 2pi) = 3cos(4t)

which shows that the signal repeats itself every T = pi/2 seconds.

[tex](b) \times (t) = e^{( - t)} [/tex]

This signal is not periodic.

[tex]e^{(-t)} = e^{(-(t+T))} [/tex]

for all t.

However, this is not possible since e^(-t) approaches 0 as t approaches infinity. Therefore, the signal is not periodic.

[tex](c) \times (t) = [cos (2t - \frac{\pi}{3}] ^2[/tex]

This signal is periodic with period T = pi. To see this, we can compute:

[tex]x (t + T) = [cos (2(t + \pi) - \pi/3)] ^2 = [cos (2t + 5\pi/3)] ^2 = [cos (2t - pi/3)] ^2 = x(t) \\

(d) x(t) = cos(4t) u(t) + sin(4t) u(-t)[/tex]

This signal is not periodic. To see this, suppose that there exists a period T such that x(t) = x (t + T) for all t. Then we must have:

cos(4t) u(t) + sin(4t) u(-t) = cos(4(t+T)) u(t+T) + sin(4(t+T)) u(-(t+T)) for all t.

However, this is not possible since the two terms on the left-hand side have different signs for t < 0, whereas the two terms on the right-hand side have the same sign for t < -T.

Therefore, the signal is not periodic.

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Let f be a function defined and continuous on the closed interval [a,b]. If f has a relative maximum at c and a < c < b, which of the following statements must be true? f(c) exists. If f'(c) exists, then f'(c) = 0. If f"(c) exists, then f"(c) LE 0. II only III only I and II only I and III only II and III only

Answers

Given that function f is defined and continuous on the closed interval [a,b], the correct statements are:

f(c) existsif f'(c) exists, then f'(c) = 0 (C. I and II only)

From the case we know that:

function f is on the closed interval [a,b]

c = relative maximum

A function reach its relative maximum when its first derivative function is equal to zero (0). Since c is the relative maximum of function f, then:

f'(c) = 0

The third statement is wrong because when c is the relative maximum point, then its second derivative function must be lower than zero (0), or:

f''(c) < 0

When the second derivative function is greater than zero (0), it indicates that the given critical point is the relative minimum.

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using the disk method, determine the volume of a solid formed by revolving the region bounded above by the line , on the left by the line , on the right by the curve , and below by the line the about the -axis.

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The volume of a solid formed by revolving the region bounded above by the line is (932π/15)

To use the disk method, we need to integrate over the axis of revolution, which is the y-axis in this case. We can break the solid into vertical disks of thickness dy.

The radius of each disk is given by the distance between the y-axis and the curve [tex]x = y^2 - 1[/tex]. So the radius is:

[tex]r = y^2 - 1[/tex]

The height of each disk is the difference between the y-coordinate of the top curve y = 3 and the y-coordinate of the bottom curve y = 1. So the height is:

h = 3 - 1 = 2

The volume of each disk is then:

[tex]dV = \pi r^2h dy[/tex]

Substituting r and h, we have:

[tex]dV = \pi (y^2 - 1)^2 (2) dy[/tex]

To find the total volume, we integrate over the range of y from 1 to 3:

[tex]V = \int_{1}^{3} \pi(y^2 - 1)^2 (2) dy[/tex]

This integral can be simplified by expanding the squared term:

[tex]V = \int_{1}^{3} \pi (y^4 - 2y^2 + 1) (2) dyV = 2\pi \int_{1}^{3}(y^4 - 2y^2 + 1) dyV = 2\pi [(1/5)y^5 - (2/3)y^3 + y]^3_1[/tex]

V = [tex]2\pi [(1/5)(3^5 - 1^5) - (2/3)(3^3 - 1^3) + (3 - 1)][/tex]

V = 2π [(1/5)(242) - (2/3)(26) + 2]

V = 2π [(242/5) - (52/3) + 2]

V = 2π [(726/15) - (260/15) + 30/15]

V = 2π [(466/15)]

V = (932π/15)

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Note: The full question is

Use the disk method or the shell method to find the volumes of the solids generated by revolving the region bounded by the graphs of the equations about the given lines. y = 1, y = 3, x = y^2 - 1.

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