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(1 point) In the following, B = {(1,0), (0, 1)} and B\' = { ui , u2 } . For each

ID: 3116882 • Letter: #

Question

(1 point) In the following, B = {(1,0), (0, 1)} and B' = { ui , u2 } . For each of the following, find the transition matrix corresponding to the change in basis from B' to B. (B is the standard basis for R2) (a) ui = (1,1), u2 = (1,2) Transition matrix: (b) ui = (2, 7), u2 = (1 , 4) Transition matrix: (c) u i = (-1, 1), u2 = (2, 2) Transition matrix: For each of the ordered bases B' = , u2 } in the previous part of this problem, find the transition matrix corresponding to the change in basis from B to B'. (B is the standard basis for R2)

Explanation / Answer

(a). B is the standard matrix for R2. The transition matrix for the change of base from B’ to B is

1

1

1

2

(b). The transition matrix for the change of base from B’ to B is

2

1

7

4

(c ). The transition matrix for the change of base from B’ to B is

-1

2

1

2

1.Let A1 =

1

1

1

0

1

2

0

1

The RREF of A1 is

1

0

2

-1

0

1

-1

1

Therefore, the transition matrix for the change of base from B to B’ is

2

-1

-1

1

2.Let A2 =

2

1

1

0

7

4

0

1

The RREF of A2 is

1

0

4

-1

0

1

-7

2

Therefore, the transition matrix for the change of base from B to B’ is

4

-1

-7

2

3. Let A3 =

-1

2

1

0

1

2

0

1

The RREF of A3is

1

0

-1/2

1/2

0

1

1/4

1/4

Therefore, the transition matrix for the change of base from B to B’ is

-1/2

1/2

1/4

1/4

1

1

1

2