76.94 Problem number 392

\[ \int \cot (e+f x) \left (a+b \sec ^2(e+f x)\right )^{3/2} \, dx \]

Optimal antiderivative \[ \frac {a^{\frac {3}{2}} \arctanh \left (\frac {\sqrt {a +b \left (\sec ^{2}\left (f x +e \right )\right )}}{\sqrt {a}}\right )}{f}-\frac {\left (a +b \right )^{\frac {3}{2}} \arctanh \left (\frac {\sqrt {a +b \left (\sec ^{2}\left (f x +e \right )\right )}}{\sqrt {a +b}}\right )}{f}+\frac {b \sqrt {a +b \left (\sec ^{2}\left (f x +e \right )\right )}}{f} \]

command

integrate(cot(f*x+e)*(a+b*sec(f*x+e)^2)^(3/2),x, algorithm="giac")

Giac 1.9.0-11 via sagemath 9.6 output

\[ \text {output too large to display} \]

Giac 1.7.0 via sagemath 9.3 output \[ \text {Exception raised: NotImplementedError} \]_______________________________________________________