3 years ago

Please explain this is math homework

Mathematics

1 answer:

Ahat [919]3 years ago

7 0

Answer:

use math-way. it helps a lot !

Step-by-step explanation:

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Answer:

Therefore

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Step-by-step explanation:

Remember that if

$I$ = Identity Matrix

then $det(I)=1$ .

Also remember that for any invertible matrix

$A*A^{-1} = I =$ Identity Matrix.

Therefore

$det(A*A^{-1}) = det(A)*det(A^{-1}) = det(I) = 1$

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

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