Integrand size = 19, antiderivative size = 51 \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\frac {x^{17/2}}{7 a \left (a x+b x^3\right )^{7/2}}+\frac {2 x^{15/2}}{35 a^2 \left (a x+b x^3\right )^{5/2}} \]
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Time = 0.05 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.105, Rules used = {2040, 2039} \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\frac {2 x^{15/2}}{35 a^2 \left (a x+b x^3\right )^{5/2}}+\frac {x^{17/2}}{7 a \left (a x+b x^3\right )^{7/2}} \]
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Rule 2039
Rule 2040
Rubi steps \begin{align*} \text {integral}& = \frac {x^{17/2}}{7 a \left (a x+b x^3\right )^{7/2}}+\frac {2 \int \frac {x^{15/2}}{\left (a x+b x^3\right )^{7/2}} \, dx}{7 a} \\ & = \frac {x^{17/2}}{7 a \left (a x+b x^3\right )^{7/2}}+\frac {2 x^{15/2}}{35 a^2 \left (a x+b x^3\right )^{5/2}} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.75 \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\frac {x^{7/2} \left (7 a x^5+2 b x^7\right )}{35 a^2 \left (x \left (a+b x^2\right )\right )^{7/2}} \]
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Time = 2.05 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.73
method | result | size |
gosper | \(\frac {\left (b \,x^{2}+a \right ) x^{\frac {19}{2}} \left (2 b \,x^{2}+7 a \right )}{35 a^{2} \left (b \,x^{3}+a x \right )^{\frac {9}{2}}}\) | \(37\) |
default | \(\frac {x^{\frac {9}{2}} \sqrt {x \left (b \,x^{2}+a \right )}\, \left (2 b \,x^{2}+7 a \right )}{35 a^{2} \left (b \,x^{2}+a \right )^{4}}\) | \(39\) |
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Time = 0.28 (sec) , antiderivative size = 76, normalized size of antiderivative = 1.49 \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\frac {{\left (2 \, b x^{6} + 7 \, a x^{4}\right )} \sqrt {b x^{3} + a x} \sqrt {x}}{35 \, {\left (a^{2} b^{4} x^{8} + 4 \, a^{3} b^{3} x^{6} + 6 \, a^{4} b^{2} x^{4} + 4 \, a^{5} b x^{2} + a^{6}\right )}} \]
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Timed out. \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\text {Timed out} \]
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\[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\int { \frac {x^{\frac {17}{2}}}{{\left (b x^{3} + a x\right )}^{\frac {9}{2}}} \,d x } \]
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Time = 0.33 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.57 \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\frac {x^{5} {\left (\frac {2 \, b x^{2}}{a^{2}} + \frac {7}{a}\right )}}{35 \, {\left (b x^{2} + a\right )}^{\frac {7}{2}}} \]
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Timed out. \[ \int \frac {x^{17/2}}{\left (a x+b x^3\right )^{9/2}} \, dx=\int \frac {x^{17/2}}{{\left (b\,x^3+a\,x\right )}^{9/2}} \,d x \]
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