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Let f(x)=lim(ntooo)(1-x^n)/(1+x^n). Then...

Let `f(x)=lim_(ntooo)(1-x^n)/(1+x^n)`. Then

A

f(x) is a constant in 0ltxlt1

B

f(x) is continuous at x=1

C

f(x) is not differentiable at x = 1

D

None of these

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