26.12 Problem number 459

\[ \int \frac {1}{\left (d+e x+f \sqrt {a+\frac {e^2 x^2}{f^2}}\right )^3} \, dx \]

Optimal antiderivative \[ -\frac {3 a \,f^{2} \ln \left (e x +f \sqrt {a +\frac {e^{2} x^{2}}{f^{2}}}\right )}{2 d^{4} e}+\frac {3 a \,f^{2} \ln \left (d +e x +f \sqrt {a +\frac {e^{2} x^{2}}{f^{2}}}\right )}{2 d^{4} e}-\frac {a \,f^{2}}{2 d^{3} e \left (e x +f \sqrt {a +\frac {e^{2} x^{2}}{f^{2}}}\right )}+\frac {-1-\frac {a \,f^{2}}{d^{2}}}{4 e \left (d +e x +f \sqrt {a +\frac {e^{2} x^{2}}{f^{2}}}\right )^{2}}-\frac {a \,f^{2}}{d^{3} e \left (d +e x +f \sqrt {a +\frac {e^{2} x^{2}}{f^{2}}}\right )} \]

command

integrate(1/(d+e*x+f*(a+e^2*x^2/f^2)^(1/2))^3,x, algorithm="giac")

Giac 1.9.0-11 via sagemath 9.6 output

\[ \frac {3 \, a f {\left | f \right |} e^{\left (-1\right )} \log \left ({\left | a f^{2} - {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )} d \right |}\right )}{4 \, d^{4}} + \frac {3 \, a f^{2} e^{\left (-1\right )} \log \left ({\left | -a f^{2} + 2 \, d x e + d^{2} \right |}\right )}{4 \, d^{4}} - \frac {3 \, a f {\left | f \right |} e^{\left (-1\right )} \log \left ({\left | -x e - d + \sqrt {a f^{2} + x^{2} e^{2}} \right |}\right )}{4 \, d^{4}} + \frac {3 \, a f {\left | f \right |} e^{\left (-1\right )} \log \left ({\left | -x e + \sqrt {a f^{2} + x^{2} e^{2}} \right |}\right )}{4 \, d^{4}} - \frac {\sqrt {a f^{2} + x^{2} e^{2}} {\left | f \right |} e^{\left (-1\right )}}{2 \, d^{3} f} + \frac {x}{2 \, d^{3}} + \frac {{\left (5 \, a^{3} f^{6} - 3 \, a^{2} d^{2} f^{4} - 9 \, a d^{4} f^{2} - d^{6} - 12 \, {\left (a^{2} d f^{4} e + a d^{3} f^{2} e\right )} x\right )} e^{\left (-1\right )}}{8 \, {\left (a f^{2} - 2 \, d x e - d^{2}\right )}^{2} d^{4}} + \frac {{\left (5 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{2} a^{3} f^{6} {\left | f \right |} + 14 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )} a^{3} d f^{6} {\left | f \right |} + 10 \, a^{3} d^{2} f^{6} {\left | f \right |} - 6 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{3} a^{2} d f^{4} {\left | f \right |} - 19 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{2} a^{2} d^{2} f^{4} {\left | f \right |} - 14 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )} a^{2} d^{3} f^{4} {\left | f \right |} + 2 \, a^{2} d^{4} f^{4} {\left | f \right |} + 2 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{3} a d^{3} f^{2} {\left | f \right |} + {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{2} a d^{4} f^{2} {\left | f \right |} - 4 \, {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )} a d^{5} f^{2} {\left | f \right |} + {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{2} d^{6} {\left | f \right |}\right )} e^{\left (-1\right )}}{8 \, {\left ({\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )} a f^{2} + a d f^{2} - {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )}^{2} d - {\left (x e - \sqrt {a f^{2} + x^{2} e^{2}}\right )} d^{2}\right )}^{2} d^{4} f} \]

Giac 1.7.0 via sagemath 9.3 output

\[ \text {Timed out} \]________________________________________________________________________________________