Ononot — A function f is defined as f(x) = \lim{n \to \infty} \frac{x

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Limits & Continuityhard

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A function $f$ is defined as $f(x) = \lim_{n \to \infty} \frac{x^n - 1}{x^n + 1}$ for $x \ge 0$ . Where is $f(x)$ discontinuous?