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Lim- f (x) - f(2) upon x-2 where f(x) = x²+x ​

Answer»

tion:Correct OPTION isB−3(X−2)2⇒f(x)+2f(1−x)=x2+2⋯⋯(i)Put x=1−x⇒f(1−x)+2f(x)=(1−x)2+2Multiply by 2⇒2f(1−x)+4f(x)=2(1−x)2+4⋯⋯(ii)SUBTRACT (ii) from (i)−3f(x)=x2−2−2(1−x)2−3f(x)=x2−2−2x2+4x−3f(x)=−(x2−4x+4)f(x)=−3(x−2)2


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