Matrices C and D are shown below.

2

1

0

a

b

-0.4

C= 0 3

4

D=0

-0.2

0.8

0

2

1

O

0.4

-0.6

What values of a and b will make the equation CD = I true?

a=0.5

b=0.1

O a=0.1

b=0.5

a=-0.5

b=-0.1

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