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If A=[ 31 -12 ], find f(A), where f(x)=x 2−5x+7. |
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Answer» Given that and f(x)=x^2-5x+7 if A =3 then f(3)=(3^2)-5*3+7 =9-15+7 =1 again A=1 then f(1)=(1^2)-5*1+7 =2-5+7 =4 again A=-1 then f(-1)=(-1^2)-5*(-1)+7 =1+5+7 =13 again A=2 then f(2)= (2^2)-5*2+7 =4-10+7 =1 |
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