38.70 Problem number 394

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

Optimal antiderivative \[ -\frac {2 b^{2} \sqrt {\frac {\cos \left (f x +e \right )}{2}+\frac {1}{2}}\, \EllipticE \left (\sin \left (\frac {f x}{2}+\frac {e}{2}\right ), \sqrt {2}\right )}{\cos \left (\frac {f x}{2}+\frac {e}{2}\right ) f \sqrt {\cos \left (f x +e \right )}\, \sqrt {b \sec \left (f x +e \right )}}+\frac {2 b \sin \left (f x +e \right ) \sqrt {b \sec \left (f x +e \right )}}{f} \]

command

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

Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output

\[ \frac {-i \, \sqrt {2} b^{\frac {3}{2}} {\rm weierstrassZeta}\left (-4, 0, {\rm weierstrassPInverse}\left (-4, 0, \cos \left (f x + e\right ) + i \, \sin \left (f x + e\right )\right )\right ) + i \, \sqrt {2} b^{\frac {3}{2}} {\rm weierstrassZeta}\left (-4, 0, {\rm weierstrassPInverse}\left (-4, 0, \cos \left (f x + e\right ) - i \, \sin \left (f x + e\right )\right )\right ) + 2 \, b \sqrt {\frac {b}{\cos \left (f x + e\right )}} \sin \left (f x + e\right )}{f} \]

Fricas 1.3.7 via sagemath 9.3 output

\[ {\rm integral}\left (\sqrt {b \sec \left (f x + e\right )} b \sec \left (f x + e\right ), x\right ) \]