1.

A={:[( 1,1,1),(1,2,-3),(2,-1,3)]:}Show that A^(3) - 6A^(2) +5A +11 I =O. Hence , findA^(-1)

Answer»


ANSWER :`A^(-1) =(1)/(11) {:[( -3,4,5),(9,-1,-4),(5,-3,-1)]:}`


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