HCU MCA 2014 Paper

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Question : 57 of 75

Marks: +1, -0

Consider the matrix
A=

[\table 1,-2,2;0,2,0;1,1,3]\;\;\;\;\;\;\;\;

(HCU-2014)
Then

\A^3 - 9\A

is

an identity matrix
a diagonal matrix
a matrix with all entries 10
a matrix with all entries 0

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