Integral of $$$\frac{\sin{\left(4 \operatorname{atan}{\left(x \right)} \right)}}{\left(x^{2} + 1\right)^{2} \left(e^{\pi x} + 1\right)}$$$
The calculator will find the integral/antiderivative of $$$\frac{\sin{\left(4 \operatorname{atan}{\left(x \right)} \right)}}{\left(x^{2} + 1\right)^{2} \left(e^{\pi x} + 1\right)}$$$, with steps shown.
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Find $$$\int \frac{\sin{\left(4 \operatorname{atan}{\left(x \right)} \right)}}{\left(x^{2} + 1\right)^{2} \left(e^{\pi x} + 1\right)}\, dx$$$.