37.12 Problem number 387

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

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

command

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

Giac 1.9.0-11 via sagemath 9.6 output

\[ \frac {2 \, {\left (\sqrt {b \cos \left (f x + e\right )} b \cos \left (f x + e\right ) + \frac {3 \, b^{2}}{\sqrt {b \cos \left (f x + e\right )}}\right )} \mathrm {sgn}\left (\cos \left (f x + e\right )\right )}{3 \, f} \]

Giac 1.7.0 via sagemath 9.3 output

\[ \int \left (b \sec \left (f x + e\right )\right )^{\frac {3}{2}} \sin \left (f x + e\right )^{3}\,{d x} \]________________________________________________________________________________________