If A = \left(\begin{array}{cc}1 & 4 \ 2 & −1 \ )\end{array}, f(x) = x^{2}−9 f(A) is

\left(\begin{array}{cc}−8 & 5 \ −5 & −8 \ )\end{array}

\left(\begin{array}{cc}0 & 0 \ 0 & 0 \ )\end{array}

TS PSC Group 1 Services Prelims 2011 Paper

Question : 59 of 200

Marks: +1, -0

If A =

{(\table 1 , 4 ; 2 , −1 ; )}

f(x) = x^{2}−9

f(A)

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