Question
Find the value of $\int \frac{\mathrm{dx}}{\mathrm{e}^{\mathrm{x}}-1}$.

Answer

self

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Similar questions

 Let $\text{F}(\alpha)=\begin{bmatrix}\cos\alpha & -\sin\alpha & 0 \\ \sin\alpha & \cos\alpha & 0 \\ 0 & 0 & 1\end{bmatrix}$ and

$\text{G}(\beta)=\begin{bmatrix} \cos\beta & 0 & \sin\beta \\ 0 & 1 & 0 \\ -\sin\beta & 0 & \cos\beta \end{bmatrix}$

Show that

$\big[\text{G}(\beta)\big]^{-1}=\text{G}(-\beta)$

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