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MadeEasy Test Series: Calculus - Differentiability

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continuous ....no need to varify...for differentiability let solve...

f'(c)=limh->0+ (f(c+h)-f(c)/h)  -> limh->0+ (1+h)3-1 -0 / h -> limh->0+  1+h3+3h(h+1)-1/h ->limh->0+ h2+3(h+1) =3

limh->0- (f(c+h)-f(c)/h) ->  limh->0- 1+h-1-0/h -> limh->0- 1=1 ....similarly for h->0

therefor not differentiable.

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