Page 113 - Elementary_Linear_Algebra_with_Applications_Anton__9_edition
P. 113

Determine whether the matrix is invertible; if so, find the inverse by inspection.
1.

       (a)

       (b)

       (c)

   Compute the product by inspection.
2.

       (a)

       (b)

   Find , , and  by inspection.
3.

(a)

(b)

       Which of the following matrices are symmetric?
4.

           (a)
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