\[ \int \frac {c+d x}{\left (a-b x^4\right )^2} \, dx \]
Optimal antiderivative \[ \frac {x \left (d x +c \right )}{4 a \left (-b \,x^{4}+a \right )}+\frac {3 c \arctan \left (\frac {b^{\frac {1}{4}} x}{a^{\frac {1}{4}}}\right )}{8 a^{\frac {7}{4}} b^{\frac {1}{4}}}+\frac {3 c \arctanh \left (\frac {b^{\frac {1}{4}} x}{a^{\frac {1}{4}}}\right )}{8 a^{\frac {7}{4}} b^{\frac {1}{4}}}+\frac {d \arctanh \left (\frac {x^{2} \sqrt {b}}{\sqrt {a}}\right )}{4 a^{\frac {3}{2}} \sqrt {b}} \]
command
integrate((d*x+c)/(-b*x^4+a)^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 \[ \text {Timed out} \]