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Is it possible to compute the Taylor-series of $\ln(x)$ for $x = 0$. I get $f\prime(x) = \frac{1}{x}$ and by plugging $0$ , it is undefined form.

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    About $x=0$ the function $\ln x$ is not differentiable.2017-01-24
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    It is also not defined.2017-01-24
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    So the question : calculate Limit using Taylor-series $\frac{\ln(x)}{x}$ is wrong? where $\lim{x \to 0}$2017-01-24
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    That limit doesn't exist - $|ln(x)|$ tends to infinty, as does $1/x$, so the limit is not defined.2017-01-24
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    The limit does exist -- it is $+\infty$. (The limit has to be as $x\to 0^+$, since $\ln$ is not defined for negative numbers.)2017-01-24

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This is not possible since

$$x\mapsto \ln(x)$$

is not defined at $x=0$.

Though you can develop $\ln(x)$ in terms of $x-1$, and then divide by $x$ to get the development of $\ln(x)/x$ that you said you wanted in the comments.

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    In other words, it is $ln(1+x)$ which is analytic in the vicinity of $0$.2017-01-24
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    @JeanMarie Yes, exactly.2017-01-24