Integrand size = 11, antiderivative size = 109 \[ \int \frac {x^6}{(a+b x)^7} \, dx=-\frac {a^6}{6 b^7 (a+b x)^6}+\frac {6 a^5}{5 b^7 (a+b x)^5}-\frac {15 a^4}{4 b^7 (a+b x)^4}+\frac {20 a^3}{3 b^7 (a+b x)^3}-\frac {15 a^2}{2 b^7 (a+b x)^2}+\frac {6 a}{b^7 (a+b x)}+\frac {\log (a+b x)}{b^7} \]
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Time = 0.04 (sec) , antiderivative size = 109, 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 = {45} \[ \int \frac {x^6}{(a+b x)^7} \, dx=-\frac {a^6}{6 b^7 (a+b x)^6}+\frac {6 a^5}{5 b^7 (a+b x)^5}-\frac {15 a^4}{4 b^7 (a+b x)^4}+\frac {20 a^3}{3 b^7 (a+b x)^3}-\frac {15 a^2}{2 b^7 (a+b x)^2}+\frac {6 a}{b^7 (a+b x)}+\frac {\log (a+b x)}{b^7} \]
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Rule 45
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a^6}{b^6 (a+b x)^7}-\frac {6 a^5}{b^6 (a+b x)^6}+\frac {15 a^4}{b^6 (a+b x)^5}-\frac {20 a^3}{b^6 (a+b x)^4}+\frac {15 a^2}{b^6 (a+b x)^3}-\frac {6 a}{b^6 (a+b x)^2}+\frac {1}{b^6 (a+b x)}\right ) \, dx \\ & = -\frac {a^6}{6 b^7 (a+b x)^6}+\frac {6 a^5}{5 b^7 (a+b x)^5}-\frac {15 a^4}{4 b^7 (a+b x)^4}+\frac {20 a^3}{3 b^7 (a+b x)^3}-\frac {15 a^2}{2 b^7 (a+b x)^2}+\frac {6 a}{b^7 (a+b x)}+\frac {\log (a+b x)}{b^7} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 77, normalized size of antiderivative = 0.71 \[ \int \frac {x^6}{(a+b x)^7} \, dx=\frac {\frac {a \left (147 a^5+822 a^4 b x+1875 a^3 b^2 x^2+2200 a^2 b^3 x^3+1350 a b^4 x^4+360 b^5 x^5\right )}{(a+b x)^6}+60 \log (a+b x)}{60 b^7} \]
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Time = 0.04 (sec) , antiderivative size = 80, normalized size of antiderivative = 0.73
method | result | size |
norman | \(\frac {\frac {49 a^{6}}{20 b^{7}}+\frac {6 a \,x^{5}}{b^{2}}+\frac {45 a^{2} x^{4}}{2 b^{3}}+\frac {125 a^{4} x^{2}}{4 b^{5}}+\frac {137 a^{5} x}{10 b^{6}}+\frac {110 a^{3} x^{3}}{3 b^{4}}}{\left (b x +a \right )^{6}}+\frac {\ln \left (b x +a \right )}{b^{7}}\) | \(80\) |
risch | \(\frac {\frac {49 a^{6}}{20 b^{7}}+\frac {6 a \,x^{5}}{b^{2}}+\frac {45 a^{2} x^{4}}{2 b^{3}}+\frac {125 a^{4} x^{2}}{4 b^{5}}+\frac {137 a^{5} x}{10 b^{6}}+\frac {110 a^{3} x^{3}}{3 b^{4}}}{\left (b x +a \right )^{6}}+\frac {\ln \left (b x +a \right )}{b^{7}}\) | \(80\) |
default | \(-\frac {a^{6}}{6 b^{7} \left (b x +a \right )^{6}}+\frac {6 a^{5}}{5 b^{7} \left (b x +a \right )^{5}}-\frac {15 a^{4}}{4 b^{7} \left (b x +a \right )^{4}}+\frac {20 a^{3}}{3 b^{7} \left (b x +a \right )^{3}}-\frac {15 a^{2}}{2 b^{7} \left (b x +a \right )^{2}}+\frac {6 a}{b^{7} \left (b x +a \right )}+\frac {\ln \left (b x +a \right )}{b^{7}}\) | \(100\) |
parallelrisch | \(\frac {60 \ln \left (b x +a \right ) x^{6} b^{6}+360 \ln \left (b x +a \right ) x^{5} a \,b^{5}+900 \ln \left (b x +a \right ) x^{4} a^{2} b^{4}+360 a \,x^{5} b^{5}+1200 \ln \left (b x +a \right ) x^{3} a^{3} b^{3}+1350 a^{2} x^{4} b^{4}+900 \ln \left (b x +a \right ) x^{2} a^{4} b^{2}+2200 a^{3} x^{3} b^{3}+360 \ln \left (b x +a \right ) x \,a^{5} b +1875 a^{4} x^{2} b^{2}+60 \ln \left (b x +a \right ) a^{6}+822 a^{5} x b +147 a^{6}}{60 b^{7} \left (b x +a \right )^{6}}\) | \(172\) |
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none
Time = 0.22 (sec) , antiderivative size = 193, normalized size of antiderivative = 1.77 \[ \int \frac {x^6}{(a+b x)^7} \, dx=\frac {360 \, a b^{5} x^{5} + 1350 \, a^{2} b^{4} x^{4} + 2200 \, a^{3} b^{3} x^{3} + 1875 \, a^{4} b^{2} x^{2} + 822 \, a^{5} b x + 147 \, a^{6} + 60 \, {\left (b^{6} x^{6} + 6 \, a b^{5} x^{5} + 15 \, a^{2} b^{4} x^{4} + 20 \, a^{3} b^{3} x^{3} + 15 \, a^{4} b^{2} x^{2} + 6 \, a^{5} b x + a^{6}\right )} \log \left (b x + a\right )}{60 \, {\left (b^{13} x^{6} + 6 \, a b^{12} x^{5} + 15 \, a^{2} b^{11} x^{4} + 20 \, a^{3} b^{10} x^{3} + 15 \, a^{4} b^{9} x^{2} + 6 \, a^{5} b^{8} x + a^{6} b^{7}\right )}} \]
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Time = 0.30 (sec) , antiderivative size = 141, normalized size of antiderivative = 1.29 \[ \int \frac {x^6}{(a+b x)^7} \, dx=\frac {147 a^{6} + 822 a^{5} b x + 1875 a^{4} b^{2} x^{2} + 2200 a^{3} b^{3} x^{3} + 1350 a^{2} b^{4} x^{4} + 360 a b^{5} x^{5}}{60 a^{6} b^{7} + 360 a^{5} b^{8} x + 900 a^{4} b^{9} x^{2} + 1200 a^{3} b^{10} x^{3} + 900 a^{2} b^{11} x^{4} + 360 a b^{12} x^{5} + 60 b^{13} x^{6}} + \frac {\log {\left (a + b x \right )}}{b^{7}} \]
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Time = 0.22 (sec) , antiderivative size = 136, normalized size of antiderivative = 1.25 \[ \int \frac {x^6}{(a+b x)^7} \, dx=\frac {360 \, a b^{5} x^{5} + 1350 \, a^{2} b^{4} x^{4} + 2200 \, a^{3} b^{3} x^{3} + 1875 \, a^{4} b^{2} x^{2} + 822 \, a^{5} b x + 147 \, a^{6}}{60 \, {\left (b^{13} x^{6} + 6 \, a b^{12} x^{5} + 15 \, a^{2} b^{11} x^{4} + 20 \, a^{3} b^{10} x^{3} + 15 \, a^{4} b^{9} x^{2} + 6 \, a^{5} b^{8} x + a^{6} b^{7}\right )}} + \frac {\log \left (b x + a\right )}{b^{7}} \]
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Time = 0.31 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.72 \[ \int \frac {x^6}{(a+b x)^7} \, dx=\frac {\log \left ({\left | b x + a \right |}\right )}{b^{7}} + \frac {360 \, a b^{4} x^{5} + 1350 \, a^{2} b^{3} x^{4} + 2200 \, a^{3} b^{2} x^{3} + 1875 \, a^{4} b x^{2} + 822 \, a^{5} x + \frac {147 \, a^{6}}{b}}{60 \, {\left (b x + a\right )}^{6} b^{6}} \]
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Time = 0.13 (sec) , antiderivative size = 81, normalized size of antiderivative = 0.74 \[ \int \frac {x^6}{(a+b x)^7} \, dx=\frac {\ln \left (a+b\,x\right )+\frac {6\,a}{a+b\,x}-\frac {15\,a^2}{2\,{\left (a+b\,x\right )}^2}+\frac {20\,a^3}{3\,{\left (a+b\,x\right )}^3}-\frac {15\,a^4}{4\,{\left (a+b\,x\right )}^4}+\frac {6\,a^5}{5\,{\left (a+b\,x\right )}^5}-\frac {a^6}{6\,{\left (a+b\,x\right )}^6}}{b^7} \]
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