Integrand size = 20, antiderivative size = 81 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=-\frac {3}{5} x^2 \sqrt {1-x^2}-\frac {1}{2} x^3 \sqrt {1-x^2}-\frac {1}{5} x^4 \sqrt {1-x^2}-\frac {3}{20} (8+5 x) \sqrt {1-x^2}+\frac {3 \arcsin (x)}{4} \]
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Time = 0.06 (sec) , antiderivative size = 81, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {1823, 847, 794, 222} \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=\frac {3 \arcsin (x)}{4}-\frac {3}{5} \sqrt {1-x^2} x^2-\frac {3}{20} (5 x+8) \sqrt {1-x^2}-\frac {1}{5} \sqrt {1-x^2} x^4-\frac {1}{2} \sqrt {1-x^2} x^3 \]
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Rule 222
Rule 794
Rule 847
Rule 1823
Rubi steps \begin{align*} \text {integral}& = -\frac {1}{5} x^4 \sqrt {1-x^2}-\frac {1}{5} \int \frac {(-9-10 x) x^3}{\sqrt {1-x^2}} \, dx \\ & = -\frac {1}{2} x^3 \sqrt {1-x^2}-\frac {1}{5} x^4 \sqrt {1-x^2}+\frac {1}{20} \int \frac {x^2 (30+36 x)}{\sqrt {1-x^2}} \, dx \\ & = -\frac {3}{5} x^2 \sqrt {1-x^2}-\frac {1}{2} x^3 \sqrt {1-x^2}-\frac {1}{5} x^4 \sqrt {1-x^2}-\frac {1}{60} \int \frac {(-72-90 x) x}{\sqrt {1-x^2}} \, dx \\ & = -\frac {3}{5} x^2 \sqrt {1-x^2}-\frac {1}{2} x^3 \sqrt {1-x^2}-\frac {1}{5} x^4 \sqrt {1-x^2}-\frac {3}{20} (8+5 x) \sqrt {1-x^2}+\frac {3}{4} \int \frac {1}{\sqrt {1-x^2}} \, dx \\ & = -\frac {3}{5} x^2 \sqrt {1-x^2}-\frac {1}{2} x^3 \sqrt {1-x^2}-\frac {1}{5} x^4 \sqrt {1-x^2}-\frac {3}{20} (8+5 x) \sqrt {1-x^2}+\frac {3}{4} \sin ^{-1}(x) \\ \end{align*}
Time = 0.14 (sec) , antiderivative size = 58, normalized size of antiderivative = 0.72 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=\frac {1}{20} \sqrt {1-x^2} \left (-24-15 x-12 x^2-10 x^3-4 x^4\right )+\frac {3}{2} \arctan \left (\frac {x}{-1+\sqrt {1-x^2}}\right ) \]
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Time = 0.37 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.52
method | result | size |
risch | \(\frac {\left (4 x^{4}+10 x^{3}+12 x^{2}+15 x +24\right ) \left (x^{2}-1\right )}{20 \sqrt {-x^{2}+1}}+\frac {3 \arcsin \left (x \right )}{4}\) | \(42\) |
trager | \(\left (-\frac {1}{5} x^{4}-\frac {1}{2} x^{3}-\frac {3}{5} x^{2}-\frac {3}{4} x -\frac {6}{5}\right ) \sqrt {-x^{2}+1}+\frac {3 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \sqrt {-x^{2}+1}+x \right )}{4}\) | \(59\) |
default | \(-\frac {x^{4} \sqrt {-x^{2}+1}}{5}-\frac {3 x^{2} \sqrt {-x^{2}+1}}{5}-\frac {6 \sqrt {-x^{2}+1}}{5}-\frac {x^{3} \sqrt {-x^{2}+1}}{2}-\frac {3 x \sqrt {-x^{2}+1}}{4}+\frac {3 \arcsin \left (x \right )}{4}\) | \(71\) |
meijerg | \(\frac {\frac {4 \sqrt {\pi }}{3}-\frac {\sqrt {\pi }\, \left (4 x^{2}+8\right ) \sqrt {-x^{2}+1}}{6}}{2 \sqrt {\pi }}-\frac {i \left (-\frac {i \sqrt {\pi }\, x \left (10 x^{2}+15\right ) \sqrt {-x^{2}+1}}{20}+\frac {3 i \sqrt {\pi }\, \arcsin \left (x \right )}{4}\right )}{\sqrt {\pi }}-\frac {-\frac {16 \sqrt {\pi }}{15}+\frac {\sqrt {\pi }\, \left (6 x^{4}+8 x^{2}+16\right ) \sqrt {-x^{2}+1}}{15}}{2 \sqrt {\pi }}\) | \(109\) |
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Time = 0.27 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.62 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=-\frac {1}{20} \, {\left (4 \, x^{4} + 10 \, x^{3} + 12 \, x^{2} + 15 \, x + 24\right )} \sqrt {-x^{2} + 1} - \frac {3}{2} \, \arctan \left (\frac {\sqrt {-x^{2} + 1} - 1}{x}\right ) \]
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Time = 0.21 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.90 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=- \frac {x^{4} \sqrt {1 - x^{2}}}{5} - \frac {x^{3} \sqrt {1 - x^{2}}}{2} - \frac {3 x^{2} \sqrt {1 - x^{2}}}{5} - \frac {3 x \sqrt {1 - x^{2}}}{4} - \frac {6 \sqrt {1 - x^{2}}}{5} + \frac {3 \operatorname {asin}{\left (x \right )}}{4} \]
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Time = 0.31 (sec) , antiderivative size = 70, normalized size of antiderivative = 0.86 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=-\frac {1}{5} \, \sqrt {-x^{2} + 1} x^{4} - \frac {1}{2} \, \sqrt {-x^{2} + 1} x^{3} - \frac {3}{5} \, \sqrt {-x^{2} + 1} x^{2} - \frac {3}{4} \, \sqrt {-x^{2} + 1} x - \frac {6}{5} \, \sqrt {-x^{2} + 1} + \frac {3}{4} \, \arcsin \left (x\right ) \]
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Time = 0.28 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.42 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=-\frac {1}{20} \, {\left ({\left (2 \, {\left ({\left (2 \, x + 5\right )} x + 6\right )} x + 15\right )} x + 24\right )} \sqrt {-x^{2} + 1} + \frac {3}{4} \, \arcsin \left (x\right ) \]
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Time = 11.17 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.44 \[ \int \frac {x^3 (1+x)^2}{\sqrt {1-x^2}} \, dx=\frac {3\,\mathrm {asin}\left (x\right )}{4}-\sqrt {1-x^2}\,\left (\frac {x^4}{5}+\frac {x^3}{2}+\frac {3\,x^2}{5}+\frac {3\,x}{4}+\frac {6}{5}\right ) \]
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