23.15 Problem number 112

\[ \int \frac {x}{\left (a^2+2 a b x^3+b^2 x^6\right )^{5/2}} \, dx \]

Optimal antiderivative \[ \frac {35 x^{2}}{243 a^{4} \sqrt {\left (b \,x^{3}+a \right )^{2}}}+\frac {x^{2}}{12 a \left (b \,x^{3}+a \right )^{3} \sqrt {\left (b \,x^{3}+a \right )^{2}}}+\frac {5 x^{2}}{54 a^{2} \left (b \,x^{3}+a \right )^{2} \sqrt {\left (b \,x^{3}+a \right )^{2}}}+\frac {35 x^{2}}{324 a^{3} \left (b \,x^{3}+a \right ) \sqrt {\left (b \,x^{3}+a \right )^{2}}}-\frac {35 \left (b \,x^{3}+a \right ) \ln \left (a^{\frac {1}{3}}+b^{\frac {1}{3}} x \right )}{729 a^{\frac {13}{3}} b^{\frac {2}{3}} \sqrt {\left (b \,x^{3}+a \right )^{2}}}+\frac {35 \left (b \,x^{3}+a \right ) \ln \left (a^{\frac {2}{3}}-a^{\frac {1}{3}} b^{\frac {1}{3}} x +b^{\frac {2}{3}} x^{2}\right )}{1458 a^{\frac {13}{3}} b^{\frac {2}{3}} \sqrt {\left (b \,x^{3}+a \right )^{2}}}-\frac {35 \left (b \,x^{3}+a \right ) \arctan \left (\frac {\left (a^{\frac {1}{3}}-2 b^{\frac {1}{3}} x \right ) \sqrt {3}}{3 a^{\frac {1}{3}}}\right ) \sqrt {3}}{729 a^{\frac {13}{3}} b^{\frac {2}{3}} \sqrt {\left (b \,x^{3}+a \right )^{2}}} \]

command

integrate(x/(b^2*x^6+2*a*b*x^3+a^2)^(5/2),x, algorithm="giac")

Giac 1.9.0-11 via sagemath 9.6 output

\[ \frac {35 \, \sqrt {3} \arctan \left (\frac {\sqrt {3} {\left (2 \, x + \left (-\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (-\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{729 \, \left (-a b^{2}\right )^{\frac {1}{3}} a^{4} \mathrm {sgn}\left (b x^{3} + a\right )} - \frac {35 \, \log \left (x^{2} + x \left (-\frac {a}{b}\right )^{\frac {1}{3}} + \left (-\frac {a}{b}\right )^{\frac {2}{3}}\right )}{1458 \, \left (-a b^{2}\right )^{\frac {1}{3}} a^{4} \mathrm {sgn}\left (b x^{3} + a\right )} - \frac {35 \, \left (-\frac {a}{b}\right )^{\frac {2}{3}} \log \left ({\left | x - \left (-\frac {a}{b}\right )^{\frac {1}{3}} \right |}\right )}{729 \, a^{5} \mathrm {sgn}\left (b x^{3} + a\right )} + \frac {140 \, b^{3} x^{11} + 525 \, a b^{2} x^{8} + 720 \, a^{2} b x^{5} + 416 \, a^{3} x^{2}}{972 \, {\left (b x^{3} + a\right )}^{4} a^{4} \mathrm {sgn}\left (b x^{3} + a\right )} \]

Giac 1.7.0 via sagemath 9.3 output

\[ \mathit {sage}_{0} x \]________________________________________________________________________________________