In Exercises 19 through 24, find the matrix B of the linear transformation T ( x → ) = A x → with respect to the basis = ( v → 1 , v → 2 ) . For practice, solve each problem in three ways: (a) Use the formula B = S − 1 A S , (b) use a commutative diagram (as in Examples 3 and 4), and (c) construct B “column by column.” 24. A = [ 13 − 20 6 − 9 ] ; v → 1 = [ 2 1 ] , v → 2 = [ 5 3 ]
In Exercises 19 through 24, find the matrix B of the linear transformation T ( x → ) = A x → with respect to the basis = ( v → 1 , v → 2 ) . For practice, solve each problem in three ways: (a) Use the formula B = S − 1 A S , (b) use a commutative diagram (as in Examples 3 and 4), and (c) construct B “column by column.” 24. A = [ 13 − 20 6 − 9 ] ; v → 1 = [ 2 1 ] , v → 2 = [ 5 3 ]
Solution Summary: The author explains how the matrix B of the linear transformation can be found by B=S-1AS where matrix S is obtained from basis vectors.
In Exercises 19 through 24, find the matrix B of the linear transformation
T
(
x
→
)
=
A
x
→
with respect to the basis
=
(
v
→
1
,
v
→
2
)
. For practice, solve each problem in three ways: (a) Use the formula
B
=
S
−
1
A
S
, (b) use a commutative diagram (as in Examples 3 and 4), and (c) construct B “column by column.”
24.
A
=
[
13
−
20
6
−
9
]
;
v
→
1
=
[
2
1
]
,
v
→
2
=
[
5
3
]
Listen
A falling object travels a distance given by the formula d = 6t + 9t2 where d is in feet
and t is the time in seconds. How many seconds will it take for the object to travel
112 feet? Round answer to 2 decimal places. (Write the number, not the units).
Your Answer:
Solve by the quadratic formula or completing the square to obtain exact solutions.
2
e
104
OA) -16±3√6
B) 8±√10
O c) -8±√10
OD) 8±3√√6
U
Question 14 (1 point)
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The frame on a picture is 18 in by 22 in outside and is of uniform width. Using
algebraic methods, what is the width of the frame if the inner area of the picture
shown is 250 in²2? Write answer to 2 decimal places. (Write the number with no
units).
18 in
Your Answer:
22 in
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