Integrand size = 45, antiderivative size = 288 \[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\frac {\sqrt {-b x+a^2 x^2} \left (-4368 b^5+2688 a^2 b^4 x+5248 a^4 b^3 x^2+12416 a^6 b^2 x^3-148243 a^8 b x^4+121339 a^{10} x^5\right ) \sqrt {x \left (a x+\sqrt {-b x+a^2 x^2}\right )}}{16380 b^7 x^5 \left (b-a^2 x\right )^2}+\sqrt {x \left (a x+\sqrt {-b x+a^2 x^2}\right )} \left (-\frac {-4872 a b^4-9352 a^3 b^3 x-24840 a^5 b^2 x^2-229768 a^7 b x^3+283847 a^9 x^4}{8190 b^7 x^4 \left (b-a^2 x\right )}+\frac {109 a^{15/2} \sqrt {-a x+\sqrt {-b x+a^2 x^2}} \arctan \left (\frac {\sqrt {a} \sqrt {-a x+\sqrt {-b x+a^2 x^2}}}{\sqrt {b}}\right )}{4 b^{15/2} x}\right ) \]
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\[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \frac {\left (\sqrt {x} \sqrt {-b+a^2 x}\right ) \int \frac {1}{x^{5/2} \left (-b+a^2 x\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx}{\sqrt {-b x+a^2 x^2}} \\ & = \frac {\left (2 \sqrt {x} \sqrt {-b+a^2 x}\right ) \text {Subst}\left (\int \frac {1}{x^4 \left (-b+a^2 x^2\right )^{5/2} \left (a x^4+x^2 \sqrt {-b x^2+a^2 x^4}\right )^{3/2}} \, dx,x,\sqrt {x}\right )}{\sqrt {-b x+a^2 x^2}} \\ \end{align*}
Time = 5.37 (sec) , antiderivative size = 302, normalized size of antiderivative = 1.05 \[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\frac {\sqrt {x \left (a x+\sqrt {x \left (-b+a^2 x\right )}\right )} \left (\sqrt {b} \left (-4368 b^5+16 a^5 b^2 x^2 \left (776 a x-3105 \sqrt {x \left (-b+a^2 x\right )}\right )+16 a^3 b^3 x \left (328 a x-1169 \sqrt {x \left (-b+a^2 x\right )}\right )+336 a b^4 \left (8 a x-29 \sqrt {x \left (-b+a^2 x\right )}\right )-a^7 b x^3 \left (148243 a x+459536 \sqrt {x \left (-b+a^2 x\right )}\right )+a^9 x^4 \left (121339 a x+567694 \sqrt {x \left (-b+a^2 x\right )}\right )\right )+446355 a^{15/2} x^2 \left (x \left (-b+a^2 x\right )\right )^{3/2} \sqrt {-a x+\sqrt {x \left (-b+a^2 x\right )}} \arctan \left (\frac {\sqrt {a} \sqrt {-a x+\sqrt {x \left (-b+a^2 x\right )}}}{\sqrt {b}}\right )\right )}{16380 b^{15/2} x^3 \left (x \left (-b+a^2 x\right )\right )^{3/2}} \]
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\[\int \frac {1}{\left (a^{2} x^{2}-b x \right )^{\frac {5}{2}} \left (a \,x^{2}+x \sqrt {a^{2} x^{2}-b x}\right )^{\frac {3}{2}}}d x\]
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Time = 0.32 (sec) , antiderivative size = 566, normalized size of antiderivative = 1.97 \[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\left [\frac {446355 \, {\left (a^{11} x^{7} - 2 \, a^{9} b x^{6} + a^{7} b^{2} x^{5}\right )} \sqrt {a} \log \left (\frac {a^{2} x^{2} + 2 \, \sqrt {a^{2} x^{2} - b x} a x - b x - 2 \, \sqrt {a^{2} x^{2} - b x} \sqrt {a x^{2} + \sqrt {a^{2} x^{2} - b x} x} \sqrt {a}}{a^{2} x^{2} - b x}\right ) + 2 \, {\left (567694 \, a^{11} x^{6} - 1027230 \, a^{9} b x^{5} + 409856 \, a^{7} b^{2} x^{4} + 30976 \, a^{5} b^{3} x^{3} + 8960 \, a^{3} b^{4} x^{2} + 9744 \, a b^{5} x + {\left (121339 \, a^{10} x^{5} - 148243 \, a^{8} b x^{4} + 12416 \, a^{6} b^{2} x^{3} + 5248 \, a^{4} b^{3} x^{2} + 2688 \, a^{2} b^{4} x - 4368 \, b^{5}\right )} \sqrt {a^{2} x^{2} - b x}\right )} \sqrt {a x^{2} + \sqrt {a^{2} x^{2} - b x} x}}{32760 \, {\left (a^{4} b^{7} x^{7} - 2 \, a^{2} b^{8} x^{6} + b^{9} x^{5}\right )}}, \frac {446355 \, {\left (a^{11} x^{7} - 2 \, a^{9} b x^{6} + a^{7} b^{2} x^{5}\right )} \sqrt {-a} \arctan \left (\frac {\sqrt {a x^{2} + \sqrt {a^{2} x^{2} - b x} x} \sqrt {-a}}{a x}\right ) + {\left (567694 \, a^{11} x^{6} - 1027230 \, a^{9} b x^{5} + 409856 \, a^{7} b^{2} x^{4} + 30976 \, a^{5} b^{3} x^{3} + 8960 \, a^{3} b^{4} x^{2} + 9744 \, a b^{5} x + {\left (121339 \, a^{10} x^{5} - 148243 \, a^{8} b x^{4} + 12416 \, a^{6} b^{2} x^{3} + 5248 \, a^{4} b^{3} x^{2} + 2688 \, a^{2} b^{4} x - 4368 \, b^{5}\right )} \sqrt {a^{2} x^{2} - b x}\right )} \sqrt {a x^{2} + \sqrt {a^{2} x^{2} - b x} x}}{16380 \, {\left (a^{4} b^{7} x^{7} - 2 \, a^{2} b^{8} x^{6} + b^{9} x^{5}\right )}}\right ] \]
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\[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\int \frac {1}{\left (x \left (a x + \sqrt {a^{2} x^{2} - b x}\right )\right )^{\frac {3}{2}} \left (x \left (a^{2} x - b\right )\right )^{\frac {5}{2}}}\, dx \]
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\[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\int { \frac {1}{{\left (a^{2} x^{2} - b x\right )}^{\frac {5}{2}} {\left (a x^{2} + \sqrt {a^{2} x^{2} - b x} x\right )}^{\frac {3}{2}}} \,d x } \]
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\[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\int { \frac {1}{{\left (a^{2} x^{2} - b x\right )}^{\frac {5}{2}} {\left (a x^{2} + \sqrt {a^{2} x^{2} - b x} x\right )}^{\frac {3}{2}}} \,d x } \]
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Timed out. \[ \int \frac {1}{\left (-b x+a^2 x^2\right )^{5/2} \left (a x^2+x \sqrt {-b x+a^2 x^2}\right )^{3/2}} \, dx=\int \frac {1}{{\left (a^2\,x^2-b\,x\right )}^{5/2}\,{\left (a\,x^2+x\,\sqrt {a^2\,x^2-b\,x}\right )}^{3/2}} \,d x \]
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