To the integrating factor method for differential equations I have to make a step where the integral of $\frac{g'(x)}{g(x)}$ is $\ln(|x|)$.
I don't understand how this is derived.
2026-03-25 16:03:24.1774454604
why the integral of $g'(x)/g(x)$ is $\ln(|x|)$
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