1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Orlov [11]
3 years ago
11

16. Let W be the set of all vectors in R3 of the form a+2b b -3a Find a basis for Wand state the dimension of W.

Mathematics
1 answer:
Yuki888 [10]3 years ago
7 0

Answer:

W=\{\left[\begin{array}{ccc}a+2b\\b\\-3a\end{array}\right]: a,b\in\mathbb{R} \}

Observe that if the vector x=\left[\begin{array}{ccc}x\\y\\z\end{array}\right] is in W then it satisfies:

\left[\begin{array}{ccc}x\\y\\z\end{array}\right]=\left[\begin{array}{c}a+2b\\b\\-3a\end{array}\right]=a\left[\begin{array}{c}1\\0\\-3\end{array}\right]+b\left[\begin{array}{c}2\\1\\0\end{array}\right]

This means that each vector in W can be expressed as a linear combination of the vectors \left[\begin{array}{c}1\\0\\-3\end{array}\right], \left[\begin{array}{c}2\\1\\0\end{array}\right]

Also we can see that those vectors are linear independent. Then the set

\{\left[\begin{array}{c}1\\0\\-3\end{array}\right], \left[\begin{array}{c}2\\1\\0\end{array}\right]\} is a basis for W and the dimension of W is 2.

You might be interested in
the area of a circular pool cover is 314 square feet. Write & solve an equation to find the diameter of the pool cover
Hunter-Best [27]
I'll help you but I;m not just going to give you the answer
8 0
3 years ago
5x+8y=24? A)y=-5/8x+3 B)y=-3/8x-5/8 C)y=3x-5/8 D)y=3/8x-5/8
klasskru [66]
5x+8y = 24
The answer is c) y=3 -5/8 x
6 0
3 years ago
Graph and check to solve the linear system <br> x+y=3<br> -2x+y=-6
Alenkinab [10]

Answer:

-x - y = -3

-2x + y = -6

-3x = -9

x = 3

3 + y = 3

y = 0

(3,0)

6 0
2 years ago
What is seven hundred thirty-one million, nine hundred thirty-four thousand, thirty in standard form
Sindrei [870]
731,934,030


please mark the brainiest
6 0
3 years ago
Read 2 more answers
Suppose your local school district decides to randomly test high school students for attention deficit disorder (ADD). There are
REY [17]

Answer:

Option C is correct. Option f is the same as option C

Step-by-step explanation:

From the question, There are three high schools in the district, each with grades between nine to twelve. The school board decided to pool all of the students together and randomly samples 250 students in the whole district that has schools between the grade of nine to twelve.

In order to test for high school students in the district for Attention Deficit disorder(ADD), they could have chosen any 250 students from any school with grades betweem nine to twelve throughout the district.

4 0
3 years ago
Other questions:
  • A population of bacteria grows by a factor of 1.32 in one hour. What is the hourly growth rate?
    10·1 answer
  • Convert 62.4lb/ft^3 to kg/m^3
    8·2 answers
  • Determine the range of the following function: y=√x
    13·1 answer
  • Help me to solve it 1001/1000=
    5·2 answers
  • Tom earns $14.85 per hour for 40 hours and time and a half for overtime for hours worked over 35. If Jordan worked 43 hours last
    11·1 answer
  • Mitchell and his friends went to the candy store, where they can buy candy by the pound. Mitchell bought 1.2 pounds of candy. Hi
    9·2 answers
  • It’s a picture^^^^^^^^
    10·1 answer
  • 12) A family stayed at a hotel for n nights. The cost was $80 per night plus a one-time fee of $20. Write an expression that rep
    11·1 answer
  • 2<br>b) the urcumference<br>circle=2tr. What is<br>the diametly = 20km?<br>T = 3.14<br>(3)​
    9·1 answer
  • The table and the Circle Chart shown display the percentage of dogs in seven different groups of dog breeds in a dog competition
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!