Integrand size = 11, antiderivative size = 93 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=-\frac {1}{2 a^4 x^2}+\frac {4 b}{a^5 x}+\frac {b^2}{3 a^3 (a+b x)^3}+\frac {3 b^2}{2 a^4 (a+b x)^2}+\frac {6 b^2}{a^5 (a+b x)}+\frac {10 b^2 \log (x)}{a^6}-\frac {10 b^2 \log (a+b x)}{a^6} \]
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Time = 0.04 (sec) , antiderivative size = 93, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {46} \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=\frac {10 b^2 \log (x)}{a^6}-\frac {10 b^2 \log (a+b x)}{a^6}+\frac {6 b^2}{a^5 (a+b x)}+\frac {4 b}{a^5 x}+\frac {3 b^2}{2 a^4 (a+b x)^2}-\frac {1}{2 a^4 x^2}+\frac {b^2}{3 a^3 (a+b x)^3} \]
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Rule 46
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {1}{a^4 x^3}-\frac {4 b}{a^5 x^2}+\frac {10 b^2}{a^6 x}-\frac {b^3}{a^3 (a+b x)^4}-\frac {3 b^3}{a^4 (a+b x)^3}-\frac {6 b^3}{a^5 (a+b x)^2}-\frac {10 b^3}{a^6 (a+b x)}\right ) \, dx \\ & = -\frac {1}{2 a^4 x^2}+\frac {4 b}{a^5 x}+\frac {b^2}{3 a^3 (a+b x)^3}+\frac {3 b^2}{2 a^4 (a+b x)^2}+\frac {6 b^2}{a^5 (a+b x)}+\frac {10 b^2 \log (x)}{a^6}-\frac {10 b^2 \log (a+b x)}{a^6} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.85 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=\frac {\frac {a \left (-3 a^4+15 a^3 b x+110 a^2 b^2 x^2+150 a b^3 x^3+60 b^4 x^4\right )}{x^2 (a+b x)^3}+60 b^2 \log (x)-60 b^2 \log (a+b x)}{6 a^6} \]
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Time = 0.04 (sec) , antiderivative size = 83, normalized size of antiderivative = 0.89
method | result | size |
norman | \(\frac {-\frac {1}{2 a}+\frac {5 b x}{2 a^{2}}-\frac {30 b^{3} x^{3}}{a^{4}}-\frac {45 b^{4} x^{4}}{a^{5}}-\frac {55 b^{5} x^{5}}{3 a^{6}}}{x^{2} \left (b x +a \right )^{3}}+\frac {10 b^{2} \ln \left (x \right )}{a^{6}}-\frac {10 b^{2} \ln \left (b x +a \right )}{a^{6}}\) | \(83\) |
risch | \(\frac {\frac {10 b^{4} x^{4}}{a^{5}}+\frac {25 b^{3} x^{3}}{a^{4}}+\frac {55 b^{2} x^{2}}{3 a^{3}}+\frac {5 b x}{2 a^{2}}-\frac {1}{2 a}}{x^{2} \left (b x +a \right )^{3}}-\frac {10 b^{2} \ln \left (b x +a \right )}{a^{6}}+\frac {10 b^{2} \ln \left (-x \right )}{a^{6}}\) | \(85\) |
default | \(-\frac {1}{2 a^{4} x^{2}}+\frac {4 b}{a^{5} x}+\frac {b^{2}}{3 a^{3} \left (b x +a \right )^{3}}+\frac {3 b^{2}}{2 a^{4} \left (b x +a \right )^{2}}+\frac {6 b^{2}}{a^{5} \left (b x +a \right )}+\frac {10 b^{2} \ln \left (x \right )}{a^{6}}-\frac {10 b^{2} \ln \left (b x +a \right )}{a^{6}}\) | \(88\) |
parallelrisch | \(\frac {60 b^{5} \ln \left (x \right ) x^{5}-60 \ln \left (b x +a \right ) x^{5} b^{5}+180 a \,b^{4} \ln \left (x \right ) x^{4}-180 \ln \left (b x +a \right ) x^{4} a \,b^{4}-110 b^{5} x^{5}+180 a^{2} b^{3} \ln \left (x \right ) x^{3}-180 \ln \left (b x +a \right ) x^{3} a^{2} b^{3}-270 a \,b^{4} x^{4}+60 a^{3} b^{2} \ln \left (x \right ) x^{2}-60 \ln \left (b x +a \right ) x^{2} a^{3} b^{2}-180 a^{2} b^{3} x^{3}+15 a^{4} b x -3 a^{5}}{6 a^{6} x^{2} \left (b x +a \right )^{3}}\) | \(167\) |
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Time = 0.22 (sec) , antiderivative size = 174, normalized size of antiderivative = 1.87 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=\frac {60 \, a b^{4} x^{4} + 150 \, a^{2} b^{3} x^{3} + 110 \, a^{3} b^{2} x^{2} + 15 \, a^{4} b x - 3 \, a^{5} - 60 \, {\left (b^{5} x^{5} + 3 \, a b^{4} x^{4} + 3 \, a^{2} b^{3} x^{3} + a^{3} b^{2} x^{2}\right )} \log \left (b x + a\right ) + 60 \, {\left (b^{5} x^{5} + 3 \, a b^{4} x^{4} + 3 \, a^{2} b^{3} x^{3} + a^{3} b^{2} x^{2}\right )} \log \left (x\right )}{6 \, {\left (a^{6} b^{3} x^{5} + 3 \, a^{7} b^{2} x^{4} + 3 \, a^{8} b x^{3} + a^{9} x^{2}\right )}} \]
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Time = 0.24 (sec) , antiderivative size = 104, normalized size of antiderivative = 1.12 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=\frac {- 3 a^{4} + 15 a^{3} b x + 110 a^{2} b^{2} x^{2} + 150 a b^{3} x^{3} + 60 b^{4} x^{4}}{6 a^{8} x^{2} + 18 a^{7} b x^{3} + 18 a^{6} b^{2} x^{4} + 6 a^{5} b^{3} x^{5}} + \frac {10 b^{2} \left (\log {\left (x \right )} - \log {\left (\frac {a}{b} + x \right )}\right )}{a^{6}} \]
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Time = 0.20 (sec) , antiderivative size = 108, normalized size of antiderivative = 1.16 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=\frac {60 \, b^{4} x^{4} + 150 \, a b^{3} x^{3} + 110 \, a^{2} b^{2} x^{2} + 15 \, a^{3} b x - 3 \, a^{4}}{6 \, {\left (a^{5} b^{3} x^{5} + 3 \, a^{6} b^{2} x^{4} + 3 \, a^{7} b x^{3} + a^{8} x^{2}\right )}} - \frac {10 \, b^{2} \log \left (b x + a\right )}{a^{6}} + \frac {10 \, b^{2} \log \left (x\right )}{a^{6}} \]
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Time = 0.30 (sec) , antiderivative size = 86, normalized size of antiderivative = 0.92 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=-\frac {10 \, b^{2} \log \left ({\left | b x + a \right |}\right )}{a^{6}} + \frac {10 \, b^{2} \log \left ({\left | x \right |}\right )}{a^{6}} + \frac {60 \, a b^{4} x^{4} + 150 \, a^{2} b^{3} x^{3} + 110 \, a^{3} b^{2} x^{2} + 15 \, a^{4} b x - 3 \, a^{5}}{6 \, {\left (b x + a\right )}^{3} a^{6} x^{2}} \]
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Time = 0.16 (sec) , antiderivative size = 101, normalized size of antiderivative = 1.09 \[ \int \frac {1}{x^3 (a+b x)^4} \, dx=\frac {\frac {55\,b^2\,x^2}{3\,a^3}-\frac {1}{2\,a}+\frac {25\,b^3\,x^3}{a^4}+\frac {10\,b^4\,x^4}{a^5}+\frac {5\,b\,x}{2\,a^2}}{a^3\,x^2+3\,a^2\,b\,x^3+3\,a\,b^2\,x^4+b^3\,x^5}-\frac {20\,b^2\,\mathrm {atanh}\left (\frac {2\,b\,x}{a}+1\right )}{a^6} \]
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