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If f is continous in [a,b] and differentiable in (a,b), and if xE(a,b), then there exists u in (a,b) such that

f(x) = f(a)+(x-a)f'(u)

What's wrong if i state :

(i)If f is continous in [a,b] and differentiable in [a,b], and if xE[a,b]

or

(ii)If f is continous in (a,b) and differentiable in (a,b), and if xE(a,b)

Thanks!

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# Mean Value Theorem

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