Ononot — Let f(x) = \lim{n \to \infty} \frac{x^n}{1+x^n} for x \ge 0.

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Derivativeshard

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Let $f(x) = \lim_{n \to \infty} \frac{x^n}{1+x^n}$ for $x \ge 0$ . Where is $f'(x)$ undefined?