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Inverse matrix

0 votes
Find inverse of matrix

0 3 5

-1 1 6

1 0 -4
asked Jun 28, 2016 in PRECALCULUS by anonymous
reshown Jun 29, 2016 by goushi

1 Answer

0 votes

Step 1:

The matrix is image.

Definition of inverse matrix:

If is an then , where .

Let , then .

image

, then has an inverse.

Step 2:

Cofactor of is

image

Cofactor of image

image

image

image

Find .

image

image

image

Solution:

The inverse of the is image

answered Jun 29, 2016 by Anney Mentor

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