1.

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

Answer»


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


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