SOLUTION: The inverse of A= 13 -4 is 3 1

SOLUTION: The inverse of A= 13 -4 is 3 1

Algebra.Com

Question 1133440: The inverse of A= 13 -4 is
3 1

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

Determinant is not zero, therefore inverse matrix exists:

Write the augmented matrix

Make the pivot in the 1st column by dividing the 1st row by

Eliminate the 1st column

Make the pivot in the 2nd column by dividing the 2nd row by

Eliminate the 2nd column

There is the inverse matrix on the right

Result:

factor out

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