Let the matrix below act on C². Find the eigenvalues and a basis for each eigenspace in C².

[1 3]
[-3 1]

Answers

Answer 1

Hello, let's note A the matrix, we need to find [tex]\lambda[/tex] such that A[tex]\lambda[/tex]=[tex]\lambda[/tex] I, where I is the identity matrix, so the determinant is 0, giving us the characteristic equation as

[tex]\left|\begin{array}{cc}1-\lambda&3\\-3&1-\lambda\end{array}\right|\\\\=(1-\lambda)^2+9\\\\=\lambda^2-2\lambda+10\\\\=0[/tex]

We just need to solve this equation using the discriminant.

[tex]\Delta=b^2-4ac=2^2-40=-36=(6i)^2[/tex]

And then the eigenvalues are.

[tex]\lambda_1=\dfrac{2-6i}{2}=\boxed{1-3i}\\\\\lambda_2=\boxed{1+3i}[/tex]

To find the basis, we have to solve the system of equations.

[tex]A\lambda_1-\lambda_1 I=\left[\begin{array}{cc}3i&3\\-3&3i\end{array}\right] \\\\=3\left[\begin{array}{cc}i&1\\-1&i\end{array}\right] \\\\\text{For a vector (a,b), we need to find a and b such that.}\\\\\begin{cases}ai+b=0\\-a+bi=0\end{cases}\\\\\text{(1,-i) is a base of this space, as i-i=0 and -1-}i^2\text{=-1+1=0.}[/tex]

[tex]A\lambda_2-\lambda_2 I=\left[\begin{array}{cc}-3i&3\\-3&-3i\end{array}\right] \\\\=3\left[\begin{array}{cc}-i&1\\-1&-i\end{array}\right]\\\\\text{For a vector (a,b), we need to find a and b such that.}\\\\\begin{cases}-ai+b=0\\-a-bi=0\end{cases}\\\\\text{(1,i) is a base of this space as -i+i=0 and -1-i*i=0.}[/tex]

Thank you


Related Questions

The solution to the compound inequality are____​

Answers

Answer:

-1 < x ≤ 2

Step-by-step explanation:

-2 < 2x ≤ 4

Divide by 2

-2/2 < 2x/2 ≤ 4/2

-1 < x ≤ 2

Open circle at -1  line going to the right to a closed circle at 2

PLZZZZZZZZ HELP ME I WILL GIVE BRAINLIEST TO THE FASTEST AND MOST ACCURATE

Answers

hello!

the correct would be “b”

the expression shown in the question equals 4. in the first expression, the expression equals -4 and in the second expression, the expression equals 4. none of the above would incorrect.

hope this helps!

- emily

HELP!! 30 POINTS!!! 2 and 3!!!

Answers

Replace x with each value and solve :

2 x 2^1 = 2 x 2 = 4

2 x 2^2 = 2 x 4 = 8

2x 2^3 = 2 x 8 = 16

2x 2^4 = 2 x 16 = 32

2 x 2^5 = 2 x 32 = 64

Now mark two points on the graph: (1,4) and (2,8) and draw a straight line though both points

The image is not rotated correctly...

Answer:

Q#2 y;; 4  8  16  32  64

Q#3 given below;

Step-by-step explanation:

Which of the following is the correct formula for distance?
(A.) d= (x2-x1)^2+(y2-y1)^2, where d is the distance between points (x1,y1) and (x2,y2).
(B.) d= sqrt (x2+x1)^2+(y2+y1)^2, where d is the distance between points (x1,y1) and (x2,y2).
(C.) d= sqrt (x2-x1)^2+(y2-y1)^2, where d is the distance between points (x1,y1) and (x2,y2).
(D.) d= sqrt (x2-x1)+(y2-y1), where d is the distance between points (x1,y1) and (x2,y2).

Answers

Answer:

(C.) d= sqrt (x2-x1)^2+(y2-y1)^2, where d is the distance between points (x1,y1) and (x2,y2).

Step-by-step explanation:

Answer:

[tex]\Huge \boxed{\mathrm{C }}[/tex]

Step-by-step explanation:

[tex]\sf The \ distance \ formula \ is \ given \ as:[/tex]

[tex]d=\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2 }[/tex]

[tex]d \Rightarrow \sf distance[/tex]

[tex](x_1,y_1) \Rightarrow \sf Coordinates \ of \ the \ first \ point[/tex]

[tex](x_2,y_2) \Rightarrow \sf Coordinates \ of \ the \ second \ point[/tex]

A zookeeper divided 3,570 pounds of food equally among 7 elephants.
How many pounds of food did each elephant receive?
Each elephant received
pounds of food.

Answers

Answer:

[tex] \boxed{\sf Amount \ of \ food \ each \ elephant \ receive = 510 \ pounds} [/tex]

Given:

Total amount of food = 3,570 pounds

Total number of elephants = 7

To Find:

Amount of food each elephant receive

Step-by-step explanation:

7 elephants receive = 3,570 pounds

[tex] \sf 1 \: elephant \: receive = \frac{3570}{7} \: pounds[/tex]

= 510 pounds

So,

Amount of food each elephant receive = 510 pounds

What is the difference between 4 and 62
2.

Answers

Answer:

6214

Step-by-step explanation:

you round up 62 and 4 20 times and that is your answer but for give me if this answer wrong

A candy box is to be made out of a piece of cardboard that measures 8 by 12 inches. Squares of equal size will be cut out of each corner, and then the ends and sides will be folded up to form a rectangular box. What size square should be cut from each corner to obtain a maximum volume

Answers

Answer:

Length of square cut = 1.569 inches

Step-by-step explanation:

given data

Length of cardboard = 12 inches

Breadth of cardboard = 8 inches

solution

we will consider here side of the square = x

when we cutting out the square then there Length and breadth of candy box will be

Length of box = (12 - x - x)

Length of box = (12 - 2x) inches.

and

Breadth of box = (8 - x - x)

Breadth of box = (8 - 2x) inches.

and Height of candy box  wil be = x inches

so

Volume of a cuboid = L × b × h    .....................1

Volume of a cuboid = (12 - 2x) × (8 - 2x) × x

Volume of a cuboid = 96x - 40x² + 4x³

now we Differentiate with respect to x

V' = 96 - 80x + 12x²

and for maximum volume we put V' = 0

0 = 96 - 80x + 12x²

solve it we get

x = 5.097

x = 1.569

when x = 5.097 inches

Breadth of candy box = 8 - 10.194 = -2.194 inches

but we know breadth never be negative,

so we take

Length of square cut = 1.569 inches

Alewuya recently hired a landscaper to do some necessary work. On the final bill, Alewuya was charged a total of $361. $265 was listed for parts and the rest for labor. If the hourly rate for labor was $32, how many hours of labor was needed to complete the job?

Answers

Answer:

361-265=96

96÷32=3

3hours of labor was needed to complete the job

What is the Area of the region shown below?

Answers

Answer:

B) 47 units²

Step-by-step explanation:

It can be done by finding the area of the black, but it will be much easier to find the area of the white and subtract.

Total area of the grid equals 10x8=80

There are two rectangles at the bottom.  6+8=14

There are 4 triangles that each equal 4.5.  4.5*4=18

There is 1 small triangle at the top that equals 1.

80-14-18-1=47

Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. ​(Type an integer or a decimal. Do not​ round.) A. nothing​% of all random samples of people from the population will have a mean driving distance to work​ (in miles) that is between the​ interval's endpoints. B. It can be said that nothing​% of the population has a driving distance to work​ (in miles) that is between the​ interval's endpoints. C. With nothing​% ​confidence, it can be said that most driving distances to work​ (in miles) in the population are between the​ interval's endpoints. D. With nothing​% ​confidence, it can be said that the population mean driving distance to work​ (in miles) is between the​ interval's endpoints.

Answers

Answer:

With 99 %  confidence, it can be said that the population mean driving distance to work ​ (in miles) is between the​ interval's endpoints [19.91 miles, 31.49 miles] .

Step-by-step explanation:

The complete question is: In a random sample of  six  ​people, the mean driving distance to work was  25.7 miles and the standard deviation was  6.7  miles. Assuming the population is normally distributed and using the​ t-distribution, a  99​%  confidence interval for the population mean  mu  is  left parenthesis 14.7 comma 36.7 right parenthesis  ​(and the margin of error is  11.0​).

Through​ research, it has been found that the population standard deviation of driving distances to work is  5.5 .  Using the standard normal distribution with the appropriate calculations for a standard deviation that is​ known, find the margin of error and construct a  99 ​%  confidence interval for the population mean  mu .

Interpret the results. Select the correct choice below and fill in the answer box to complete your choice.  ​(Type an integer or a decimal. Do not​ round.)  

A.  nothing ​%  of all random samples of  six  people from the population will have a mean driving distance to work​ (in miles) that is between the​ interval's endpoints.

B.  With  nothing ​%  ​confidence, it can be said that most driving distances to work​ (in miles) in the population are between the​ interval's endpoints.

C.  It can be said that  nothing ​%  of the population has a driving distance to work​ (in miles) that is between the​ interval's endpoints.  

D.  With  nothing %  confidence, it can be said that the population mean driving distance to work ​ (in miles) is between the​ interval's endpoints.

We are given that in a random sample of  six  ​people, the mean driving distance to work was  25.7 miles and the standard deviation was  6.7  miles.

Through​ research, it has been found that the population standard deviation of driving distances to work is  5.5 .

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

                             P.Q.  =  [tex]\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex]  ~  N(0,1)  

where, [tex]\bar X[/tex] = sample mean driving distance to work = 25.7 miles

             [tex]\sigma[/tex] = population standard deviation = 5.5 miles

            n = sample of people = 6

             [tex]\mu[/tex] = population mean driving distance to work

Here for constructing a 99% confidence interval we have used a One-sample z-test statistics because we know about the population standard deviation.

So, 99% confidence interval for the population mean, [tex]\mu[/tex] is ;

P(-2.58 < N(0,1) < 2.58) = 0.99  {As the critical value of z at 0.5% level

                                                      of significance are -2.58 & 2.58}  

P(-2.58 < [tex]\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex] < 2.58) = 0.99

P( [tex]-2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex] < [tex]{\bar X-\mu}[/tex] < [tex]2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ) = 0.99

P( [tex]\bar X-2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex] < [tex]\mu[/tex] < [tex]\bar X+2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ) = 0.99

99% confidence interval for [tex]\mu[/tex] = [ [tex]\bar X-2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex] , [tex]\bar X+2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ]

                                            = [ [tex]25.7-2.58 \times {\frac{5.5}{\sqrt{6} } }[/tex] , [tex]25.7+2.58 \times {\frac{5.5}{\sqrt{6} } }[/tex] ]

                                            = [19.91, 31.49]

Therefore, a 99% confidence for the population mean is [19.91, 31.49] .

The margin of error here is = [tex]2.58 \times {\frac{\sigma}{\sqrt{n} } }[/tex]

                                             = [tex]2.58 \times {\frac{5.5}{\sqrt{6} } }[/tex]  = 5.793

With 99 %  confidence, it can be said that the population mean driving distance to work ​ (in miles) is between the​ interval's endpoints [19.91, 31.49] .

What is the area of a circle with a diameter of 6?

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{28.28 \: }}}}}[/tex]

Step-by-step explanation:

Given, diameter of a circle = 6

pi ( π ) = 22 / 7

Finding the radius of the circle

We know that the radius of a circle is just half of the diameter. So, 6 / 2 = 3

Finding the area of circle having radius of 3

[tex] \boxed{ \sf{area \: of \: circle = \pi \: {r}^{2} }}[/tex]

plug the values

⇒[tex] \sf{area \: of \: circle = \frac{22}{7} \times {3}^{2} }[/tex]

Evaluate the power

⇒[tex] \sf{area \: of \: circle = \frac{22}{7} \times 9}[/tex]

Calculate

⇒[tex] \sf{area \:of \: circle = 28.28 \: }[/tex]

Hope I helped!

Best regards! :D

give another name for r

Answers

I would have to say its AB<----

But im not 100% sure I wish you luck.

You take the four Aces, four $2$'s, and four $3$'s from a standard deck of 52 cards, forming a set of $12$ cards. You then deal all $12$ cards at random to four players, so that each player gets three cards. What is the probability that each player gets an Ace, a $2$, and a $3$?

Answers

Answer:

Probability each player gets an ace, a $2 and a $3 = 0.0374

Step-by-step explanation:

The total number of ways to divide the card in triples among four players = 369600 ways

The total number of ways to share the cards such that no card is repeated in each triple = 13824 ways

Probability each player gets an ace, a $2 and a $3 = 13824/369600

Probability each player gets an ace a $2 and a $3 = 0.0374

Note: Further explanation is provided in the attachment.

Please, can someone help me with this problem? I would really appreciate it if you could explain the process too.

Answers

Your new line has to have the same slope as the green line for them to be parallel, so start off with y=-3/4x+b.

Plug in (2,4) into the new line so 2 for x and 4 for y

It should look like 4=-3/4(2)+b

-3/4x2 is -1.5

Then add 1.5 to both sides and you should get 5.5=b

Your new line is y=-3/4x+5.5 and (0,5.5) is a point on the line

I’m really struggling, someone please help!

Answers

Hi there! :)

Answer:

[tex]\huge\boxed{C.}[/tex]

We can examine each answer choice individually:

A. 569 × 10² = 569 × (10 · 10) = 569 · 100 = 56,900. Therefore, this choice is incorrect.

B. 569 · 10 = 5,690. This choice is incorrect.

C. 10³ · 569 = (10 · 10 · 10) ·569 = 1000 · 569 = 569,000. This choice is correct.

D. 10² · 569 = (10 · 10) · 569 = 56,900. This choice is incorrect.

Therefore, the correct option is C.

Answer:

 A. 569 × 10² = 569 × (10 · 10) = 569 · 100 = 56,900.

B. 569 · 10 = 5,690.

C. 10³ · 569 = (10 · 10 · 10) ·569 = 1000 · 569 = 569,000.

D. 10² · 569 = (10 · 10) · 569 = 56,900.

So your answer is C

Which statement about the two values of the digits 4 is correct 10 times more, 40 times more, 100 times more, 400 times more
In the number 1,034,456

Answers

Answer:

10 times more

Step-by-step explanation:

Step 1: Find the 2 '4' values

Value 1 is 400

Value 2 is 4,000

Step 2: Divide the lager number with the smaller number

4,000 / 400 = 10

Therefore the first digit is 10 times more than the second digit(Looking from left to right)

Perform the operation. (Write fractional answers in simplest form.) 8x/3 ÷ 6/7

Answers

Answer:

[tex]\frac{28x}{9}[/tex]

Step-by-step explanation:

Order of Operations: BPEMDAS

Step 1: Write out equation

[tex]\frac{8x}{3} /\frac{6}{7}[/tex]

Step 2: KCF (Keep Change Flip)

[tex]\frac{8x}{3} (\frac{7}{6})[/tex]

Step 3: Multiply

[tex]\frac{56x}{18}[/tex]

Step 4: Simplify

[tex]\frac{28x}{9}[/tex]

Answer:

28x/9

Step-by-step explanation:

Dividing a fraction by fraction is the same as multiplying a fraction by the other fraction's reciprocal:

Here is the formula:

[tex]\frac{x}{y} / \frac{a}{b} = \frac{x}{y} * \frac{b}{a}[/tex]

Thus, [tex]\frac{8x}{3} / \frac{6}{7} = \frac{8x}{3} * \frac{7}{6}[/tex]

8x * 7 = 56x and 3* 6 is 18, so:

[tex]\frac{56x}{18}[/tex]

It can be further simplified by dividing both numerator and denominator by 2:

[tex]\frac{28x}{9}[/tex]

round 5.36909546581 to 5 decimal places.

Answers

Answer:

5.36910

Step-by-step explanation

whatever you see like 95 can round up to 100.

5.369095... you just round up 95 to 100.

5 decimal is 5.36910

The number 5.36909546581 which is needed to be rounded off up to 5 decimal places is 5.36910.

What are decimal numbers?

The decimal numeral system is the most widely used system for representing both integer and non-integer values. It is the Hindu-Arabic numeral system's expansion to non-integer numbers. The method of representing numbers in the decimal system is commonly referred to as decimal.

Given the number 5.36909546581 which is needed to be rounded off up to 5 decimal places. Therefore, if we look at the sixth place after the decimal it is equal to 5.

Thus, fifth place is needed to be rounded off to the next number.

Hence, the number 5.36909546581 which is needed to be rounded off up to 5 decimal places is 5.36910.

Learn more about Decimal Numbers here:

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Find the heigt and width of the box. PLEASE HELP I’m having a lot of trouble on this.

Answers

Answer:

The height and width are both 12 inches.

Step-by-step explanation:

2304/16=144

√144=12

What is the sum of ( − 5.5) and the product of 5 3 and the number that is 100 greater than (− 5.5)?

Answers

Answer:

- 5.5 + ( 5/3 ) x( 100-5.5)     ( as per statement given)

-5.5 + (5/3)x(94.5) = -5.5 + 5x31.5 =  -5.5 + 157.5

=152

Step-by-step explanation:

. Which sentence contains a proper noun? Users of electronic databases can check a library’s catalog to see which books are available. Using computers, people can obtain goods directly from manufacturers in other countries. The Internet is a communication network that gained popularity in the 1990s. With the capabilities provided by the computer, users can research products, services, and companies online.

Answers

Step-by-step explanation:

A proper noun is a specific name for a particular person, place, or thing.

The Internet is a communication network that gained popularity in the 1990s.

A proper noun should always start with a capital letter, whether at the start or middle of a sentence.


Convert 8 centimeters into yards. Round your answer to the nearest hundredth

Answers

Answer: 0.08 yards

Step-by-step explanation: 1 centimeter equals to about  0.01 yards. You have to multiple 0.01 to 8 and it will give 0.08 yards.

Answer:

x = 0,087489064

Step-by-step explanation:

1 cm =  0.010936133 yards

8 cm = x

x = 8 cm x 0.010936133 yards/ 1 cm

x = 0,087489064

Let L1 be the line containing points (8, -4) and (2, -5), and let L2 be the line containing points (10, 9) and (15, -21). Find the slope of each line.

Answers

Line 1
Points : (8,-4) and (2,-5)

To find the slope:
M = (y - y) / (x - x)
M = (-4 - -5) / (8 - 2)
M = (-4 + 5) / 6
M = 1 / 6 (answer)

Line 2

Points: (10, 9) and (15, -21)

M = (y - y) / (x - x)
M = (9 + 21) / (10 - 15)
M = 30 / -5
M = -30/5 (reduce this)
M= -6 (answer)

x +x= telllllllllkkkll​

Answers

Answer: X + X= 2x or X squared.

Step-by-step explanation:

Which is closest to the distance between A and B on the number
line?
A) -9
B) -5
C) 13
D) 5
E) 12​

Answers

Answer:

C) 13

Step-by-step explanation:

A on the number line is about -5 and B is 8. Act as if there wasn't a negative sign in front of the 5. Add the two numbers together the get the distance.

claire and her classmates placed the colored block on a scale during a science lab the blue block weighed 0.9 pounds and the green block weighed 0.07 how much more did the blue block weigh than the green block?

Answers

Answer:

0.83

Step-by-step explanation:

.9 which is .90 minus the weight of the blue block which is.07 is equal to .83 thus making it your answer.

The blue block weighs 0.2 pounds more than the green block.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

The difference between the weights of the colored blocks is how more the blue block weighs than the green block which is,

= (0.9 - 0.7).

= 0.2 pounds.

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Sally had 150 dollars to spend on 9 books. After
buying them she had 15 dollars. How much did each book cost

Answers

Answer:

Each book costs $15 dollars

Step-by-step explanation

150-15=135

135/9=15

$15

At the sixth-grade school dance, there are 132 boys, 89 girls, and 14 adults. Write the ratio of the number of boys to the number of girls. Type your answer either in the format: 3:4 with no spaces, OR in the format 3 to 4.

Answers

Answer:

the ratio will be 132 to 89

The ratio is 132 : 89.

What is ratio?

A comparison of two quantities by division is called a ratio and the equality of two ratios is called proportion. A ratio can be written in different forms like x : y or x/y and is commonly read as, x is to y.

Ratio is the comparison of two quantities which is obtained by dividing the first quantity by the other. If a and b are two quantities of the same kind and with the same units, such that b is not equal to 0, then the quotient a/b is called the ratio between a and b. Ratios are expressed using the symbol of the colon (:). This means that ratio a/b has no unit and it can be written as a : b

Given:

Boys= 132

girls= 89

adults= 14

So,

the ratio of number of boys to number of girls is

= 132/89

=132 : 89

Learn more about ratio here:

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Video Example EXAMPLE 3 Find the local maximum and minimum values and saddle points of f(x, y) = x4 + y4 − 4xy + 1. SOLUTION We first locate the critical points:

Answers

Answer:

(0, 0) is a saddle point

(1, 1) is a local minimum

(-1, -1) is another point  of local minimum

Step-by-step explanation:

We first locate the critical points. In order to get the critical points we need to find the first derivatives and then set them to zero.

f(x, y) = x⁴ + y⁴ - 4 xy + 1  

Find the first derivatives wrt to x and y

[tex]f_{x}(x,y)[/tex] = 4x ³ - 4y  --> (1)

[tex]f_{y}(x,y)[/tex] = 4y³ - 4x  --> (2)

Solve (1) for y

4x ³ - 4y = 0

x ³ = y

y = x ³ ---> (3)

Solve (2) for x

4y³ - 4x = 0

4y³ = 4x

y³ = x

x = y³  ----> (4)

Plug  (3) into (2)

4y³ - 4x

4(x ³)³ - 4x = 0

4x⁹ - 4x = 0

4x (x ⁸ - 1) = 0

4x (x ⁴ - 1)(x⁴  + 1) = 0

4x (x ² - 1)(x ² + 1)(x ⁴ + 1) = 0

4x (x - 1)(x + 1)(x ² + 1)(x ⁴ + 1) = 0

So

x = 1 , -1 , 0

In order to find values of y, Plug each x value in (3)

For

x = 0

corresponding y value

y = x ³

y = 0 ³

y = 0

For

x = 1

y = x ³

y = 1 ³

y = 1

For

x = -1

y = x ³

y = (-1 )³

y = -1

Hence we get the critical points which are:

(0, 0)

(1, 1)  and

(-1, -1)

Now for each critical point, we have to compute D(x,y)

For a critical point (x,y), D computed as:

D(x, y) = [tex]f_{xx}[/tex] (x, y) - [tex]f_{yy}[/tex] (x, y) - ([tex]f_{xy}[/tex] (x, y))²

After computing D(x,y) check:

If D(x, y) > 0 and [tex]f_{xx}[/tex] (x, y) > 0:

f(x, y) is a local minimum.

If D(x, y) > 0 and  [tex]f_{xx}[/tex] (x, y) < 0:

f(x, y) is a local maximum.

If D(x, y) < 0:

then f(x, y) is a saddle point

Here first compute the second derivative in order to get  [tex]f_{xx}[/tex] ,  [tex]f_{yy}[/tex] and [tex]f_{xy}[/tex]

we have already computed:

[tex]f_{x}(x,y)[/tex] = 4x ³ - 4y  --> (1)

[tex]f_{y}(x,y)[/tex] = 4y³ - 4x  --> (2)

Now

[tex]f_{xx}(x,y)[/tex]  = 12x²

[tex]f_{yy}(x,y)[/tex]  = 12y²

[tex]f_{xy}(x,y)[/tex]  = -4

Compute D(x,y)

Critical Point (0, 0):

[tex]D(0, 0) = f_{xx} (0,0) f_{yy}(0,0)-(f_{xy}(0,0))^{2}[/tex]

Putting values of  [tex]f_{xx}(x,y)[/tex] , [tex]f_{yy}(x,y)[/tex] and [tex]f_{xy}(x,y)[/tex] in above equation:

D(0,0) = 12(0)² * 12(0)² - (-4)²

          = 0 * 0 -16

D(0,0) = -16

We know that if D < 0, the critical point f(x, y) is a saddle point.

D(0,0) < 0 because D(0,0) = -16

Hence (0, 0) is a saddle point

Compute D(x,y)

Critical Point (1, 1):

[tex]D(1, 1) = f_{xx} (1,1) f_{yy}(1,1)-(f_{xy}(1,1))^{2}[/tex]

Putting values of  [tex]f_{xx}(x,y)[/tex] , [tex]f_{yy}(x,y)[/tex] and [tex]f_{xy}(x,y)[/tex] in above equation:

D(1,1) = 12(1)² * 12(1)² - (-4)²

        = 12 * 12 - 16

D(1,1) = 128

We know that if D(x, y) > 0 and [tex]f_{xx}[/tex] (x, y) > 0 then f(x, y) is a local minimum.

D(1,1) > 0 because D(1,1) = 128

[tex]f_{xx}[/tex] (x, y) > 0 because  [tex]f_{xx}[/tex] (x, y) = 12

Hence (1,1) is the local minimum

Compute D(x,y)

Critical Point (-1, -1):

[tex]D(-1, -1) = f_{xx} (-1,-1) f_{yy}(-1,-1)-(f_{xy}(-1,-1))^{2}[/tex]

Putting values of  [tex]f_{xx}(x,y)[/tex] , [tex]f_{yy}(x,y)[/tex] and [tex]f_{xy}(x,y)[/tex] in above equation:

D(-1,-1) = 12(-1)² * 12(-1)² - (-4)²

          = 12 * 12 - 16

D(-1,-1) = 128

We know that if D(x, y) > 0 and [tex]f_{xx}[/tex] (x, y) > 0 then f(x, y) is a local minimum.

D(-1,-1) > 0 because D(-1,-1) = 128

[tex]f_{xx}[/tex] (x, y) > 0 because  [tex]f_{xx}[/tex] (x, y) = 12

Hence (-1,-1) is the local minimum

Write the following relation as a linear equation in standard form. Include a space between terms and operations.
B={(x, y): (2, 3), (4,4), (6,5), ...}

Answers

Answer:

In the form of

Y= mx+c

Y= 1/2x +2

m = 1/2

Step-by-step explanation:

A linear equation in it's standard form is in the format

Y= mx+c

Where m is the slope and c is the y intercept

Let's use these two points to determine both the slope and the equation

(2, 3), (4,4)

Slope= (y2-y1)/(x2-x1)

Slope= (4-3)/(4-2)

Slope= 1/2

Equation of the linear function

(Y-y1)/(x-x1)= m

(Y-3)/(x-2)= 1/2

2(y-3) = x-2

2y -6 = x-2

2y= x-2+6

2y= x+4

Y= 1/2x +2

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