Scalar and Matrix Multiplication Answers

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1
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Choose one:

A
1 x 3
B
3 x 1
C
3 x 3
3

Find the product of C = AB.

Answers:
Blank 1:-1
Blank 2:3
Blank 3:3
Blank 4:-3
4

c12 =

Answer:

3

5

c21 =

Answer:

3

6

c22 =

Answer:

-3

7

Find the product of D = BA.

Answers:
Blank 1:0
Blank 2:6
Blank 3:1
Blank 4:-4
8

d12 =

Answer:

6

9

d21 =

Answer:

1

10

d22 =

Answer:

-4

11

Multiply: b1 = b2 = b3 =

Answers:
Part 1:-21
Part 2:33
Part 3:6
12

Which of the following statements are true about scalar multiplication of matrices?

Answer not available
13

Question text not available

Question illustration
Answer not available
15

Multiplies every element of a matrix by the same number:

Answers:
Selection 1:Scalar
Selection 2:Neither
Selection 3:Matrix
Selection 4:Matrix
18

The following transformation uses both scalar and matrix multiplication.What are the coordinates of the resulting figure?

Question illustration
A
(0,0), (4, 0), (4, –2), (0, –4)
B
(0, 0), (8, 0), (8, –4), (0, –8)
C
(0, 0), (–8, 0), (–8, 4), (0, 8)
D
(0, 0), (0, –8), (–4,–8), (–8,0)

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Scalar and Matrix Multiplication Answers…