24.510 Problem number 2558

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

Optimal antiderivative \[ \frac {\sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (a b +\left (-a -b \right ) x +x^{2}\right )^{\frac {2}{3}}}{-2 b \,d^{\frac {1}{3}}+2 d^{\frac {1}{3}} x +\left (a b +\left (-a -b \right ) x +x^{2}\right )^{\frac {2}{3}}}\right )}{d^{\frac {1}{3}}}+\frac {\ln \left (b \sqrt {d}-x \sqrt {d}+d^{\frac {1}{6}} \left (a b +\left (-a -b \right ) x +x^{2}\right )^{\frac {2}{3}}\right )}{d^{\frac {1}{3}}}-\frac {\ln \left (b^{2} d -2 b d x +d \,x^{2}+\left (-b \,d^{\frac {2}{3}}+d^{\frac {2}{3}} x \right ) \left (a b +\left (-a -b \right ) x +x^{2}\right )^{\frac {2}{3}}+d^{\frac {1}{3}} \left (a b +\left (-a -b \right ) x +x^{2}\right )^{\frac {4}{3}}\right )}{2 d^{\frac {1}{3}}} \]

command

Integrate[(-(a*(a - 2*b)) - 2*b*x + x^2)/(((-a + x)*(-b + x))^(2/3)*(a^2 + b*d - (2*a + d)*x + x^2)),x]

Mathematica 13.1 output

\[ -\frac {(a-x)^{2/3} (b-x)^{2/3} \left (-2 \sqrt {3} \text {ArcTan}\left (\frac {\sqrt {3} (a-x)^{2/3}}{(a-x)^{2/3}-2 \sqrt [3]{d} \sqrt [3]{b-x}}\right )-2 \log \left ((a-x)^{2/3}+\sqrt [3]{d} \sqrt [3]{b-x}\right )+\log \left ((a-x)^{4/3}-\sqrt [3]{d} (a-x)^{2/3} \sqrt [3]{b-x}+d^{2/3} (b-x)^{2/3}\right )\right )}{2 \sqrt [3]{d} ((a-x) (b-x))^{2/3}} \]

Mathematica 12.3 output

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