SpareChange
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  • 10-10-2020
  • Mathematics
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What is A−1?
Enter your answer by filling in the boxes. Enter any fractions as simplified fractions.

What is A1 Enter your answer by filling in the boxes Enter any fractions as simplified fractions class=

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 10-10-2020

Answer:

(-1/2     -1/8

  1/4    3/16)

Step-by-step explanation:

(-3  -2

 4    8 )  ^ -1

First find the determinant

-3 * 8  - (-2 *4) = -24 - (-8) = -24 +8 = -16

Multiply 1 over the determinant by The matrix with the -3 and 8 switched

and negate the -2 and the 4

1/-16(8  2

        -4    -3 )

(-1/2     -1/8

  1/4    3/16)

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