/ / 2\ / / 2\\ / 2\\
| 2|x | 2 | 2|x || |x ||
5*|-1 - cot |--| + x *|1 + cot |--||*cot|--||
\ \4 / \ \4 // \4 //
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2
$$\frac{5 \left(x^{2} \left(\cot^{2}{\left(\frac{x^{2}}{4} \right)} + 1\right) \cot{\left(\frac{x^{2}}{4} \right)} - \cot^{2}{\left(\frac{x^{2}}{4} \right)} - 1\right)}{2}$$
/ / 2\\ / / 2\ / / 2\\ / 2\\
| 2|x || | |x | 2 | 2|x || 2 2|x ||
-5*x*|1 + cot |--||*|- 6*cot|--| + x *|1 + cot |--|| + 2*x *cot |--||
\ \4 // \ \4 / \ \4 // \4 //
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4
$$- \frac{5 x \left(\cot^{2}{\left(\frac{x^{2}}{4} \right)} + 1\right) \left(x^{2} \left(\cot^{2}{\left(\frac{x^{2}}{4} \right)} + 1\right) + 2 x^{2} \cot^{2}{\left(\frac{x^{2}}{4} \right)} - 6 \cot{\left(\frac{x^{2}}{4} \right)}\right)}{4}$$