/ 2/ 2\ 2 / 2/ 2\\ / 2\\
8*\-1 - cot \(3 + 2*x) / + 4*(3 + 2*x) *\1 + cot \(3 + 2*x) //*cot\(3 + 2*x) //
$$8 \left(4 \left(2 x + 3\right)^{2} \left(\cot^{2}{\left(\left(2 x + 3\right)^{2} \right)} + 1\right) \cot{\left(\left(2 x + 3\right)^{2} \right)} - \cot^{2}{\left(\left(2 x + 3\right)^{2} \right)} - 1\right)$$
/ 2/ 2\\ / / 2\ 2 2/ 2\ 2 / 2/ 2\\\
64*\1 + cot \(3 + 2*x) //*(3 + 2*x)*\3*cot\(3 + 2*x) / - 4*(3 + 2*x) *cot \(3 + 2*x) / - 2*(3 + 2*x) *\1 + cot \(3 + 2*x) ///
$$64 \left(2 x + 3\right) \left(\cot^{2}{\left(\left(2 x + 3\right)^{2} \right)} + 1\right) \left(- 2 \left(2 x + 3\right)^{2} \left(\cot^{2}{\left(\left(2 x + 3\right)^{2} \right)} + 1\right) - 4 \left(2 x + 3\right)^{2} \cot^{2}{\left(\left(2 x + 3\right)^{2} \right)} + 3 \cot{\left(\left(2 x + 3\right)^{2} \right)}\right)$$