Q18 of 137 Page 19

#Mark the correct alternative in each of the following

is maximum when x =



Differentiating f(x) with respect to x, we get



Differentiating f’(x) with respect to x, we get



For maxima at x=c, f’(c)=0 and f’’(c)<0


f’(x)=0⇒ or


and >0


Hence, is a point of maxima for f(x).

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