If $y=\ln(x)$ and the percentage error in $x$ is 5%, find the error in $y$.

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Normally I can solve error problems easily but I am seeing this question for the first time, so a little help in understanding it would be appreciated. Thanks

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$$y = \ln x \implies dy = \frac{1}{x}dx$$ and you have $\frac{dx}{x}$in %, and $dy$ is $\cdots$