\[ \int \sec (e+f x) (a+b \sec (e+f x)) (c+d \sec (e+f x)) \, dx \]
Optimal antiderivative \[ \frac {\left (2 a c +b d \right ) \arctanh \left (\sin \left (f x +e \right )\right )}{2 f}+\frac {\left (a d +b c \right ) \tan \left (f x +e \right )}{f}+\frac {b d \sec \left (f x +e \right ) \tan \left (f x +e \right )}{2 f} \]
command
integrate(sec(f*x+e)*(a+b*sec(f*x+e))*(c+d*sec(f*x+e)),x, algorithm="giac")
Giac 1.9.0-11 via sagemath 9.6 output
\[ \frac {{\left (2 \, a c + b d\right )} \log \left ({\left | \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right ) + 1 \right |}\right ) - {\left (2 \, a c + b d\right )} \log \left ({\left | \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right ) - 1 \right |}\right ) - \frac {2 \, {\left (2 \, b c \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{3} + 2 \, a d \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{3} - b d \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{3} - 2 \, b c \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right ) - 2 \, a d \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right ) - b d \tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )\right )}}{{\left (\tan \left (\frac {1}{2} \, f x + \frac {1}{2} \, e\right )^{2} - 1\right )}^{2}}}{2 \, f} \]
Giac 1.7.0 via sagemath 9.3 output
\[ \text {Exception raised: NotImplementedError} \]________________________________________________________________________________________