18.125 Problem number 456

\[ \int \frac {x^3}{\left (8 c-d x^3\right )^2 \left (c+d x^3\right )^{3/2}} \, dx \]

Optimal antiderivative \[ \frac {x^{4} F_{1}\left (\frac {4}{3}, \frac {3}{2}, 2, \frac {7}{3}, -\frac {d \,x^{3}}{c}, \frac {d \,x^{3}}{8 c}\right ) \sqrt {1+\frac {d \,x^{3}}{c}}}{256 c^{3} \sqrt {d \,x^{3}+c}} \]

command

integrate(x^3/(-d*x^3+8*c)^2/(d*x^3+c)^(3/2),x, algorithm="fricas")

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

\[ \text {output too large to display} \]

Fricas 1.3.7 via sagemath 9.3 output \[ {\rm integral}\left (\frac {\sqrt {d x^{3} + c} x^{3}}{d^{4} x^{12} - 14 \, c d^{3} x^{9} + 33 \, c^{2} d^{2} x^{6} + 112 \, c^{3} d x^{3} + 64 \, c^{4}}, x\right ) \]