Integrand size = 13, antiderivative size = 30 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {a^2}{11 x^{11}}-\frac {a b}{4 x^8}-\frac {b^2}{5 x^5} \]
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Time = 0.01 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.077, Rules used = {276} \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {a^2}{11 x^{11}}-\frac {a b}{4 x^8}-\frac {b^2}{5 x^5} \]
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Rule 276
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a^2}{x^{12}}+\frac {2 a b}{x^9}+\frac {b^2}{x^6}\right ) \, dx \\ & = -\frac {a^2}{11 x^{11}}-\frac {a b}{4 x^8}-\frac {b^2}{5 x^5} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.00 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {a^2}{11 x^{11}}-\frac {a b}{4 x^8}-\frac {b^2}{5 x^5} \]
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Time = 3.69 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.83
| method | result | size |
| default | \(-\frac {a^{2}}{11 x^{11}}-\frac {a b}{4 x^{8}}-\frac {b^{2}}{5 x^{5}}\) | \(25\) |
| norman | \(\frac {-\frac {1}{5} b^{2} x^{6}-\frac {1}{4} a b \,x^{3}-\frac {1}{11} a^{2}}{x^{11}}\) | \(26\) |
| risch | \(\frac {-\frac {1}{5} b^{2} x^{6}-\frac {1}{4} a b \,x^{3}-\frac {1}{11} a^{2}}{x^{11}}\) | \(26\) |
| gosper | \(-\frac {44 b^{2} x^{6}+55 a b \,x^{3}+20 a^{2}}{220 x^{11}}\) | \(27\) |
| parallelrisch | \(\frac {-44 b^{2} x^{6}-55 a b \,x^{3}-20 a^{2}}{220 x^{11}}\) | \(27\) |
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Time = 0.29 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.87 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {44 \, b^{2} x^{6} + 55 \, a b x^{3} + 20 \, a^{2}}{220 \, x^{11}} \]
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Time = 0.11 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.90 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=\frac {- 20 a^{2} - 55 a b x^{3} - 44 b^{2} x^{6}}{220 x^{11}} \]
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Time = 0.20 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.87 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {44 \, b^{2} x^{6} + 55 \, a b x^{3} + 20 \, a^{2}}{220 \, x^{11}} \]
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none
Time = 0.28 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.87 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {44 \, b^{2} x^{6} + 55 \, a b x^{3} + 20 \, a^{2}}{220 \, x^{11}} \]
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Time = 0.04 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.87 \[ \int \frac {\left (a+b x^3\right )^2}{x^{12}} \, dx=-\frac {\frac {a^2}{11}+\frac {a\,b\,x^3}{4}+\frac {b^2\,x^6}{5}}{x^{11}} \]
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