15.109 Problem number 2265

\[ \int \frac {f+g x}{\sqrt {d+e x} \sqrt {c d^2-b d e-b e^2 x-c e^2 x^2}} \, dx \]

Optimal antiderivative \[ -\frac {2 \left (-d g +e f \right ) \arctanh \left (\frac {\sqrt {d \left (-b e +c d \right )-b \,e^{2} x -c \,e^{2} x^{2}}}{\sqrt {-b e +2 c d}\, \sqrt {e x +d}}\right )}{e^{2} \sqrt {-b e +2 c d}}-\frac {2 g \sqrt {d \left (-b e +c d \right )-b \,e^{2} x -c \,e^{2} x^{2}}}{c \,e^{2} \sqrt {e x +d}} \]

command

integrate((g*x+f)/(e*x+d)^(1/2)/(-c*e^2*x^2-b*e^2*x-b*d*e+c*d^2)^(1/2),x, algorithm="giac")

Giac 1.9.0-11 via sagemath 9.6 output

\[ -2 \, {\left ({\left (\frac {{\left (d g - f e\right )} \arctan \left (\frac {\sqrt {-{\left (x e + d\right )} c + 2 \, c d - b e}}{\sqrt {-2 \, c d + b e}}\right )}{\sqrt {-2 \, c d + b e}} + \frac {\sqrt {-{\left (x e + d\right )} c + 2 \, c d - b e} g}{c}\right )} e^{\left (-1\right )} - \frac {{\left (c d g \arctan \left (\frac {\sqrt {2 \, c d - b e}}{\sqrt {-2 \, c d + b e}}\right ) - c f \arctan \left (\frac {\sqrt {2 \, c d - b e}}{\sqrt {-2 \, c d + b e}}\right ) e + \sqrt {2 \, c d - b e} \sqrt {-2 \, c d + b e} g\right )} e^{\left (-1\right )}}{\sqrt {-2 \, c d + b e} c}\right )} e^{\left (-1\right )} \]

Giac 1.7.0 via sagemath 9.3 output

\[ \int \frac {g x + f}{\sqrt {-c e^{2} x^{2} - b e^{2} x + c d^{2} - b d e} \sqrt {e x + d}}\,{d x} \]________________________________________________________________________________________