Integrand size = 17, antiderivative size = 51 \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=-\frac {2 x}{3 b \left (a x+b x^2\right )^{3/2}}+\frac {2 (a+2 b x)}{3 a^2 b \sqrt {a x+b x^2}} \]
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Time = 0.01 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.118, Rules used = {666, 627} \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\frac {2 (a+2 b x)}{3 a^2 b \sqrt {a x+b x^2}}-\frac {2 x}{3 b \left (a x+b x^2\right )^{3/2}} \]
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Rule 627
Rule 666
Rubi steps \begin{align*} \text {integral}& = -\frac {2 x}{3 b \left (a x+b x^2\right )^{3/2}}-\frac {\int \frac {1}{\left (a x+b x^2\right )^{3/2}} \, dx}{3 b} \\ & = -\frac {2 x}{3 b \left (a x+b x^2\right )^{3/2}}+\frac {2 (a+2 b x)}{3 a^2 b \sqrt {a x+b x^2}} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.57 \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\frac {2 x^2 (3 a+2 b x)}{3 a^2 (x (a+b x))^{3/2}} \]
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Time = 1.92 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.57
method | result | size |
pseudoelliptic | \(\frac {2 x \left (\frac {2 b x}{3}+a \right )}{\sqrt {x \left (b x +a \right )}\, \left (b x +a \right ) a^{2}}\) | \(29\) |
trager | \(\frac {2 \left (2 b x +3 a \right ) \sqrt {b \,x^{2}+a x}}{3 a^{2} \left (b x +a \right )^{2}}\) | \(32\) |
gosper | \(\frac {2 x^{3} \left (b x +a \right ) \left (2 b x +3 a \right )}{3 a^{2} \left (b \,x^{2}+a x \right )^{\frac {5}{2}}}\) | \(33\) |
default | \(-\frac {x}{2 b \left (b \,x^{2}+a x \right )^{\frac {3}{2}}}-\frac {a \left (-\frac {1}{3 b \left (b \,x^{2}+a x \right )^{\frac {3}{2}}}-\frac {a \left (-\frac {2 \left (2 b x +a \right )}{3 a^{2} \left (b \,x^{2}+a x \right )^{\frac {3}{2}}}+\frac {16 b \left (2 b x +a \right )}{3 a^{4} \sqrt {b \,x^{2}+a x}}\right )}{2 b}\right )}{4 b}\) | \(94\) |
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none
Time = 0.24 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.86 \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\frac {2 \, \sqrt {b x^{2} + a x} {\left (2 \, b x + 3 \, a\right )}}{3 \, {\left (a^{2} b^{2} x^{2} + 2 \, a^{3} b x + a^{4}\right )}} \]
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\[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\int \frac {x^{2}}{\left (x \left (a + b x\right )\right )^{\frac {5}{2}}}\, dx \]
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none
Time = 0.21 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.06 \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\frac {4 \, x}{3 \, \sqrt {b x^{2} + a x} a^{2}} - \frac {2 \, x}{3 \, {\left (b x^{2} + a x\right )}^{\frac {3}{2}} b} + \frac {2}{3 \, \sqrt {b x^{2} + a x} a b} \]
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Time = 0.29 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.18 \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\frac {2 \, {\left (3 \, {\left (\sqrt {b} x - \sqrt {b x^{2} + a x}\right )} \sqrt {b} + 2 \, a\right )}}{3 \, {\left ({\left (\sqrt {b} x - \sqrt {b x^{2} + a x}\right )} \sqrt {b} + a\right )}^{3} \sqrt {b}} \]
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Time = 9.19 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.61 \[ \int \frac {x^2}{\left (a x+b x^2\right )^{5/2}} \, dx=\frac {2\,\sqrt {b\,x^2+a\,x}\,\left (3\,a+2\,b\,x\right )}{3\,a^2\,{\left (a+b\,x\right )}^2} \]
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