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