Integrand size = 17, antiderivative size = 75 \[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\frac {2}{a \sqrt {a x^2+b x^3}}-\frac {3 \sqrt {a x^2+b x^3}}{a^2 x^2}+\frac {3 b \text {arctanh}\left (\frac {\sqrt {a} x}{\sqrt {a x^2+b x^3}}\right )}{a^{5/2}} \]
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Time = 0.05 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.235, Rules used = {2048, 2050, 2033, 212} \[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\frac {3 b \text {arctanh}\left (\frac {\sqrt {a} x}{\sqrt {a x^2+b x^3}}\right )}{a^{5/2}}-\frac {3 \sqrt {a x^2+b x^3}}{a^2 x^2}+\frac {2}{a \sqrt {a x^2+b x^3}} \]
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Rule 212
Rule 2033
Rule 2048
Rule 2050
Rubi steps \begin{align*} \text {integral}& = \frac {2}{a \sqrt {a x^2+b x^3}}+\frac {3 \int \frac {1}{x \sqrt {a x^2+b x^3}} \, dx}{a} \\ & = \frac {2}{a \sqrt {a x^2+b x^3}}-\frac {3 \sqrt {a x^2+b x^3}}{a^2 x^2}-\frac {(3 b) \int \frac {1}{\sqrt {a x^2+b x^3}} \, dx}{2 a^2} \\ & = \frac {2}{a \sqrt {a x^2+b x^3}}-\frac {3 \sqrt {a x^2+b x^3}}{a^2 x^2}+\frac {(3 b) \text {Subst}\left (\int \frac {1}{1-a x^2} \, dx,x,\frac {x}{\sqrt {a x^2+b x^3}}\right )}{a^2} \\ & = \frac {2}{a \sqrt {a x^2+b x^3}}-\frac {3 \sqrt {a x^2+b x^3}}{a^2 x^2}+\frac {3 b \tanh ^{-1}\left (\frac {\sqrt {a} x}{\sqrt {a x^2+b x^3}}\right )}{a^{5/2}} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 62, normalized size of antiderivative = 0.83 \[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\frac {-\sqrt {a} (a+3 b x)+3 b x \sqrt {a+b x} \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )}{a^{5/2} \sqrt {x^2 (a+b x)}} \]
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Time = 1.82 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.27
method | result | size |
pseudoelliptic | \(\frac {2 b x +4 a}{b^{2} \sqrt {b x +a}}\) | \(20\) |
default | \(\frac {x^{2} \left (b x +a \right ) \left (3 \sqrt {b x +a}\, \operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right ) b x -3 \sqrt {a}\, b x -a^{\frac {3}{2}}\right )}{\left (b \,x^{3}+a \,x^{2}\right )^{\frac {3}{2}} a^{\frac {5}{2}}}\) | \(62\) |
risch | \(-\frac {b x +a}{a^{2} \sqrt {x^{2} \left (b x +a \right )}}-\frac {b \left (\frac {4}{\sqrt {b x +a}}-\frac {6 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{\sqrt {a}}\right ) \sqrt {b x +a}\, x}{2 a^{2} \sqrt {x^{2} \left (b x +a \right )}}\) | \(75\) |
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Time = 0.28 (sec) , antiderivative size = 189, normalized size of antiderivative = 2.52 \[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\left [\frac {3 \, {\left (b^{2} x^{3} + a b x^{2}\right )} \sqrt {a} \log \left (\frac {b x^{2} + 2 \, a x + 2 \, \sqrt {b x^{3} + a x^{2}} \sqrt {a}}{x^{2}}\right ) - 2 \, \sqrt {b x^{3} + a x^{2}} {\left (3 \, a b x + a^{2}\right )}}{2 \, {\left (a^{3} b x^{3} + a^{4} x^{2}\right )}}, -\frac {3 \, {\left (b^{2} x^{3} + a b x^{2}\right )} \sqrt {-a} \arctan \left (\frac {\sqrt {b x^{3} + a x^{2}} \sqrt {-a}}{a x}\right ) + \sqrt {b x^{3} + a x^{2}} {\left (3 \, a b x + a^{2}\right )}}{a^{3} b x^{3} + a^{4} x^{2}}\right ] \]
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\[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\int \frac {x}{\left (x^{2} \left (a + b x\right )\right )^{\frac {3}{2}}}\, dx \]
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\[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\int { \frac {x}{{\left (b x^{3} + a x^{2}\right )}^{\frac {3}{2}}} \,d x } \]
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Time = 0.29 (sec) , antiderivative size = 72, normalized size of antiderivative = 0.96 \[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=-\frac {3 \, b \arctan \left (\frac {\sqrt {b x + a}}{\sqrt {-a}}\right )}{\sqrt {-a} a^{2} \mathrm {sgn}\left (x\right )} - \frac {3 \, {\left (b x + a\right )} b - 2 \, a b}{{\left ({\left (b x + a\right )}^{\frac {3}{2}} - \sqrt {b x + a} a\right )} a^{2} \mathrm {sgn}\left (x\right )} \]
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Timed out. \[ \int \frac {x}{\left (a x^2+b x^3\right )^{3/2}} \, dx=\int \frac {x}{{\left (b\,x^3+a\,x^2\right )}^{3/2}} \,d x \]
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