36.66 Problem number 214

\[ \int \frac {d+e x}{\sqrt {a+c x^4}} \, dx \]

Optimal antiderivative \[ \frac {e \arctanh \left (\frac {x^{2} \sqrt {c}}{\sqrt {c \,x^{4}+a}}\right )}{2 \sqrt {c}}+\frac {d \sqrt {\frac {\cos \left (4 \arctan \left (\frac {c^{\frac {1}{4}} x}{a^{\frac {1}{4}}}\right )\right )}{2}+\frac {1}{2}}\, \EllipticF \left (\sin \left (2 \arctan \left (\frac {c^{\frac {1}{4}} x}{a^{\frac {1}{4}}}\right )\right ), \frac {\sqrt {2}}{2}\right ) \left (\sqrt {a}+x^{2} \sqrt {c}\right ) \sqrt {\frac {c \,x^{4}+a}{\left (\sqrt {a}+x^{2} \sqrt {c}\right )^{2}}}}{2 \cos \left (2 \arctan \left (\frac {c^{\frac {1}{4}} x}{a^{\frac {1}{4}}}\right )\right ) a^{\frac {1}{4}} c^{\frac {1}{4}} \sqrt {c \,x^{4}+a}} \]

command

integrate((e*x+d)/(c*x^4+a)^(1/2),x, algorithm="fricas")

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

\[ \frac {4 \, c^{\frac {3}{2}} d \left (-\frac {a}{c}\right )^{\frac {3}{4}} {\rm ellipticF}\left (\frac {\left (-\frac {a}{c}\right )^{\frac {1}{4}}}{x}, -1\right ) + a \sqrt {c} e \log \left (-2 \, c x^{4} - 2 \, \sqrt {c x^{4} + a} \sqrt {c} x^{2} - a\right )}{4 \, a c} \]

Fricas 1.3.7 via sagemath 9.3 output

\[ {\rm integral}\left (\frac {e x + d}{\sqrt {c x^{4} + a}}, x\right ) \]