let u and v be subspace of a vector space w . show that if w = u ⊕v then u ∩v = {0}.

Answers

Answer 1

If W = U ⊕ V, then U ∩ V = {0} which can be proved by proving {0} is an element of U ∩ V and there are no other elements in U ∩ V besides {0} for the vector space.

To show that if W = U ⊕ V, then U ∩ V = {0}, we need to prove two things:

1. {0} is an element of U ∩ V.
2. There are no other elements in U ∩ V besides {0}.

Step 1: Show that {0} is an element of U ∩ V.

Since U and V are subspaces of the vector space W, they both must contain the zero vector (0) as per the definition of a subspace. Therefore, the zero vector is in both U and V, which implies that 0 is an element of U ∩ V.

Step 2: Show that there are no other elements in U ∩ V besides {0}.

Suppose there is a nonzero vector x that belongs to U ∩ V. This means x is in both U and V. Since W = U ⊕ V, any vector in W can be uniquely written as the sum of a vector from U and a vector from V. Thus, x can be written as:

x = u + v

where u is a vector from U and v is a vector from V. However, x is also in both U and V, so we can rewrite the equation as:

x = x + 0

Since the sum of vectors from U and V is unique, we must have u = x and v = 0. But this contradicts our initial assumption that x is a nonzero vector, as x ∈ V and we assumed x ≠ 0. Therefore, there can be no other elements in U ∩ V besides {0}.

In conclusion, if W = U ⊕ V, then U ∩ V = {0}.


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Related Questions

Find the point-slope equation for the line that passes through the points (-6, 24) and (5, -31). Use the first point in your equation. y - [?] = [ ](x-[ ])​

Answers

It should be y1 - y2/x1 - x2 this is supposed to be a fraction


I end up getting -31 - 24/5 + 6 or -31 -24/5 - (-6)

Need help ASAP 25 points

Answers

Answer:

The volume is 24 cubic cenimeters. Can i be brainlyest? Lol i know i spelled it wrong :l

Step-by-step explanation:

the length and breadth of a hall are 20m and 15m respectively. find the area of 4 Walls of the hall if the height of the hall is 10 m​

Answers

Answer: 700m^2

Step-by-step explanation:

length = 20m

breadth= 15m

so we use lateral surface area = 2(L+B) H

area of hall = 2(20+15)10

2×35×10 = 700m^2 ans

need to know the middle part

Answers

[tex]\Large\boxed{\tt Answer:~3x=2x+10;~x=10}[/tex]

[tex]\tt Step-by-step~explanation:[/tex]

Since it shows us that both ends of the segment in the middle bisects the sides of the triangle in the middle, we know that the segment in the middle is half of the hypotenuse (4x + 20).

[tex]\tt a)~ 3x =\frac{1}{2} (4x+20)[/tex]

Let's solve the right side of the equation by distributing[tex]\tt 0.5 (4x+20)\\4x*0.5=2x\\20*0.5=10\\\\b)~2x+10;~3x=2x+10[/tex]

Now, we can solve for x by moving the variable x to one side of the equation and everything else on the other side.

[tex]\tt 3x-(2x)=2x-(2x)+10\\\\c)~x=10[/tex]

PLS SHOW HOW YOU SOLVED THE PROBLEM
15. The perimeter of an isosceles triangle is 34 inches. When you add the base of the
triangle to one of the equal sides the sum is 18. What is the length of the base of the
triangle?
a)
2 inches
go to card 3
b) 14 inches
go to card 6
c) 9 inches
go to card 9
d) 16 inches
go to card 11
e) 4 inches
go to card 13

Answers

Answer:

D

Step-by-step explanation:

What's the circumference of a circle with a radius of 5 inches

Answers

Answer:

10π

Step-by-step explanation:

Please let me know if you want me to write an explanation for my answer :)

The answer is:
31.4in (it’s rounded to the nearest 10th)

ayo!! listen to me this is an easy question :)

Apples are on sale at the local fruit stand at 4 lbs. for $2.60. Which equation can be used to find the cost, c, of n pounds of apples?
c = 4
c = .65n
c = 2.60n
c = 8n

Answers

Answer:

B ) c = 0.65n

Step-by-step explanation:

To find how much a single pound costs, divide the total cost by the total weight (2.60 ÷ 4). So, the cost (c), equals $0.65 per pound.

2.60/4=0.65n
So, I think the answer is c=0.65n

Help please and tysm

6 x (5 + 4) - 3 - (2+1)

A 18
B) 30
C) 48
D) 54

Answers

Answer:

54

Step-by-step explanation:

find the value of -
[tex]( {x}^{2} - x)[/tex]
where, x = 5

Answers

Step-by-step explanation:

(x^2 -x)=(5^2-5)

=25-5 =20

Answer:

(x²-x)=(5²-5)

=(25-5)

=(20)ans..............

jake has a recipe that uses 4 cups of flour. He has a bag with 48 cups of flour. He wants to know how many recipes he can make using the bag of
flour. He finds the answer using this number sentence:
48 4=
Which number sentence shows another way to solve this problem?
A x 4 = 48
B. 48 x = 4
C 0 : 4 = 48
D. 4: 48 = 0

Answers

Answer:

D

Step-by-step explanation:

It is just like 4/48.

Answer: b

Step-by-step explanation: b because you can multiply which 48 times 4

if sin theta = cos theta,theta is an acute angle then tan theta=?
please answer within one hour
I will mark u brainliest​

Answers

sin θ = cos θ

when cos θ = 0

θ = π/2

sin θ
-------- = 1 , θ≠ π/2
cos θ

tan θ = 1

θ = arctan (1)

θ = π/4

Answer:

hope it helped have a good day mate

Mr. Mika paid a total of $150 to rent a room at a hotel for two nights. The table shows information about four other
guests who rented rooms at the hotel.
Hotel Bills
Number of Nights
Room Was Rented
Total Amount
Paid
Guest
1
6
$450
II
3
$225
III
8
$600
IV
5
$360
Which guest did NOT pay the same nightly rate that Mr. Mika did?

Answers

Answer:

Well, one night at the hotel equals $75.

Step-by-step explanation:

All you have to do is mulitlpy the nights by $75.

The last one is wrong it should be

5 nights = $375.

Hope this helps! Bye

Slope of 4,-9 and 8,-3

Answers

Answer:

3+5=8 its question answer ok

Answer:

slope=. y2-y1/x2-x1

= -3+9/8-4

= 6/4

=3/2

A bag has some purple marbles and
some green marbles in it. This can be
modeled with the following equation.
T = p + g.
Solve the equation for the number of
purple marbles, p.
Enter the variable that belongs in the green box.
p = [?] - [ ]

Answers

Answer:

p= T-g

Step-by-step explanation:

Answer:

p=t-g

Step-by-step explanation:

1/4 y + 9=1/2 A -34 b 2 c 9 d 38

Answers

¹/₄y + 9 = ½

¹/₄y = ½-9

¹/₄y = -¹⁷/₂

y = -34

A sailboat with a sick passenger abroad is following a parabolic path given by the equation = − 2 +2 + 8.
The boat’s captain sent out a distress signal. A speedboat is trying to catch the sailboat to provide medical aid and is on a path given by the linear equation y=- x+8. Besides the y-intercept (starting location) where do the paths of the two boats cross (for each graph you must plot at least 3 points each and give answer in coordinate pair notation)?

Answers

A sailboat with a sick passenger aboard is following a parabolic path given by the equation y=-2x+8. T...

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Which expression represents the factor form of the equation above ?

Answers

Answer:

(x+4)(x+25)

Step-by-step explanation:

x*x=x^2

x*20=20x

4*x=4x

4*25=100

x^2+20x+4x+100

put the commons together and you will get

x^2+29x+100

Write an solve the inequality. A gym charges a one time sign-up fee of $10.25 and then $5 each time you go. A student can pay up to $135.25. How many times can the student go to the gym?

Answers

Answer:

25 visits

Step-by-step explanation:

Given data

One time fee= $10.25

let the number of times visited be x

and the total cost for x visits be y

Hence

y=10.25+5x------------1

for y=135.25

let us find x

135.25= 10.25+5x

135.25-10.25= 5x

125=5x

x= 125/5

[tex]x\geq 25 visits[/tex]

A savings account earns 7% interest each year, compounded quarterly (4 times a year). If a person invests $300 and makes no further deposits or withdrawals, what is the balance in the account after 5 years​

Answers

Answer:

.

Step-by-step explanation:

Find the square root. 1/16​

Answers

Answer:

The square root of 1/16 is 1/4=0.25

Step-by-step explanation:

The square root of 1/16 is 1/4.

To find the square root of 1/16, you can take the square root of the numerator and the denominator separately.

√(1/16) = √1 / √16

Since the square root of 1 is 1, and the square root of 16 is 4:

√(1/16) = 1/4

So, the square root of 1/16 is 1/4.

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On a loan of $4,500 for 2 1/2 years at 4% per year, how much do you wind up paying to pay off the loan?

Answers

4/100= x/4,500 18,000/100= $180x2.5= $450

Answer:

4,950

Step-by-step explanation:

4,500*.10=450

4,500+450=4,950

Hope this helps:)

Can someone please help me ASAP

Answers

Answer:

Look down below!

Step-by-step explanation:

Fist, make your inequality:

-x + 5y > -10

5y > x - 10

y = .2x - 2

Now, plug in any value of x to find y!

Ex:  x = 5...

y = .2 (5) - 2

y = -1

Your first coordinate could be (5, -1)

Hope this helps!

A rectangle has a length of 2y inches and a width of y - 4 inches. If the perimeter of the rectangle is 22 inches, what is y? What is the length? What is the width?

Answers

P = 2( l + w)
Length: 2y
Width: y - 4
P= 22 inches
2(2y) + 2(y - 4) = 22
4y + 2y - 8 = 22
4y + 2y = 6y and add (-8) on both sides of the equation to equal: 6y = 30
Divide 6 from both sides of the equation and you get: y = 5
Check:
4(5) + 2(5) - 8 = 22
20 + 10 - 8 = 22
30 - 8 = 22 ✅

Find the product of 2x4(3x2 + 4x + 1).
6X6 + 8x5 + 2x4
6x3 + 3x4+1
5X6 + 6x5 + 3x4
5x8 + 6x4 + 1​

Answers

Answer:

A: 6X6 + 8x5 + 2x4

Step-by-step explanation:

3x-4y=-14 6x+3y=27 don’t understand how to solve

Answers

tama Ang kanyang sagot

Determine if the triangles are congruent by HL, SAS, SSS, AAS, or
ASA

Somebody help please!!!

Answers

asa. the side is in the middle of the angles

what is the ratio then what is the value of the ration?

Answers

Answer:

For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six (that is, 8∶6, which is equivalent to the ratio 4∶3).

George wants to buy a new television that is on sale for 1/4 off the regular price of $599.96. The sales tax is 7%. What is the final price of the television including tax? ​

Answers

Answer:

641.96

Step-by-step explanation:

Solve for x and y.
8
5
Х
15
У
12

Answers

Answer:

1.84553470835e+37

Step-by-step explanation:

if the slop of the straight line passing through the two points A (4, k) , B (3, 2) is 5, find the value of K

Answers

Answer:

Step-by-step explanation:

*The dashes are the fraction line*

To find slope...

difference between y

-------------------------------

difference between x

2 - k

-------  =  5

3 - 4

3-4 = -1 so...

-1 ( 2 - k ) = 5

k - 2 = 5

k = 7

Hope this helps!

Answer:

2.5 or 5/2

Step-by-step explanation:

Y2-Y1/X2-X1=m

(2-k)/(3-4)=5

(2-k)/-1=5

Multiply both sides by -1

(2-k)/2=-2.5

-k/-1=-2.5/-1

k=2.5 or 5/2

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