Integrand size = 11, antiderivative size = 73 \[ \int \log ^3(a+b x+c x) \, dx=-6 x+\frac {6 (a+(b+c) x) \log (a+(b+c) x)}{b+c}-\frac {3 (a+(b+c) x) \log ^2(a+(b+c) x)}{b+c}+\frac {(a+(b+c) x) \log ^3(a+(b+c) x)}{b+c} \]
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Time = 0.03 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.364, Rules used = {2494, 2436, 2333, 2332} \[ \int \log ^3(a+b x+c x) \, dx=\frac {(a+x (b+c)) \log ^3(a+x (b+c))}{b+c}-\frac {3 (a+x (b+c)) \log ^2(a+x (b+c))}{b+c}+\frac {6 (a+x (b+c)) \log (a+x (b+c))}{b+c}-6 x \]
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Rule 2332
Rule 2333
Rule 2436
Rule 2494
Rubi steps \begin{align*} \text {integral}& = \int \log ^3(a+(b+c) x) \, dx \\ & = \frac {\text {Subst}\left (\int \log ^3(x) \, dx,x,a+(b+c) x\right )}{b+c} \\ & = \frac {(a+(b+c) x) \log ^3(a+(b+c) x)}{b+c}-\frac {3 \text {Subst}\left (\int \log ^2(x) \, dx,x,a+(b+c) x\right )}{b+c} \\ & = -\frac {3 (a+(b+c) x) \log ^2(a+(b+c) x)}{b+c}+\frac {(a+(b+c) x) \log ^3(a+(b+c) x)}{b+c}+\frac {6 \text {Subst}(\int \log (x) \, dx,x,a+(b+c) x)}{b+c} \\ & = -6 x+\frac {6 (a+(b+c) x) \log (a+(b+c) x)}{b+c}-\frac {3 (a+(b+c) x) \log ^2(a+(b+c) x)}{b+c}+\frac {(a+(b+c) x) \log ^3(a+(b+c) x)}{b+c} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 67, normalized size of antiderivative = 0.92 \[ \int \log ^3(a+b x+c x) \, dx=\frac {-6 (b+c) x+6 (a+(b+c) x) \log (a+(b+c) x)-3 (a+(b+c) x) \log ^2(a+(b+c) x)+(a+(b+c) x) \log ^3(a+(b+c) x)}{b+c} \]
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Time = 0.14 (sec) , antiderivative size = 71, normalized size of antiderivative = 0.97
method | result | size |
derivativedivides | \(\frac {\ln \left (a +\left (b +c \right ) x \right )^{3} \left (a +\left (b +c \right ) x \right )-3 \ln \left (a +\left (b +c \right ) x \right )^{2} \left (a +\left (b +c \right ) x \right )+6 \left (a +\left (b +c \right ) x \right ) \ln \left (a +\left (b +c \right ) x \right )-6 a -6 \left (b +c \right ) x}{b +c}\) | \(71\) |
default | \(\frac {\ln \left (a +\left (b +c \right ) x \right )^{3} \left (a +\left (b +c \right ) x \right )-3 \ln \left (a +\left (b +c \right ) x \right )^{2} \left (a +\left (b +c \right ) x \right )+6 \left (a +\left (b +c \right ) x \right ) \ln \left (a +\left (b +c \right ) x \right )-6 a -6 \left (b +c \right ) x}{b +c}\) | \(71\) |
norman | \(x \ln \left (b x +x c +a \right )^{3}+\frac {a \ln \left (b x +x c +a \right )^{3}}{b +c}-6 x +6 x \ln \left (b x +x c +a \right )-3 x \ln \left (b x +x c +a \right )^{2}+\frac {6 a \ln \left (b x +x c +a \right )}{b +c}-\frac {3 a \ln \left (b x +x c +a \right )^{2}}{b +c}\) | \(98\) |
risch | \(\frac {\ln \left (b x +x c +a \right )^{3} \left (b x +x c +a \right )}{b +c}-\frac {3 \ln \left (b x +x c +a \right )^{2} \left (b x +x c +a \right )}{b +c}+6 x \ln \left (b x +x c +a \right )+\frac {6 a \ln \left (a +\left (b +c \right ) x \right )}{b +c}-\frac {6 b x}{b +c}-\frac {6 x c}{b +c}\) | \(99\) |
parallelrisch | \(\frac {x \ln \left (b x +x c +a \right )^{3} a b +x \ln \left (b x +x c +a \right )^{3} a c -3 x \ln \left (b x +x c +a \right )^{2} a b -3 x \ln \left (b x +x c +a \right )^{2} a c +\ln \left (b x +x c +a \right )^{3} a^{2}+6 x \ln \left (b x +x c +a \right ) a b +6 x \ln \left (b x +x c +a \right ) a c -3 \ln \left (b x +x c +a \right )^{2} a^{2}-6 a b x -6 x c a +6 \ln \left (b x +x c +a \right ) a^{2}}{\left (b +c \right ) a}\) | \(156\) |
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Time = 0.28 (sec) , antiderivative size = 67, normalized size of antiderivative = 0.92 \[ \int \log ^3(a+b x+c x) \, dx=\frac {{\left ({\left (b + c\right )} x + a\right )} \log \left ({\left (b + c\right )} x + a\right )^{3} - 3 \, {\left ({\left (b + c\right )} x + a\right )} \log \left ({\left (b + c\right )} x + a\right )^{2} - 6 \, {\left (b + c\right )} x + 6 \, {\left ({\left (b + c\right )} x + a\right )} \log \left ({\left (b + c\right )} x + a\right )}{b + c} \]
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Time = 0.16 (sec) , antiderivative size = 95, normalized size of antiderivative = 1.30 \[ \int \log ^3(a+b x+c x) \, dx=6 x \log {\left (a + b x + c x \right )} + \left (- 6 b - 6 c\right ) \left (- \frac {a \log {\left (a + x \left (b + c\right ) \right )}}{\left (b + c\right )^{2}} + \frac {x}{b + c}\right ) + \frac {\left (- 3 a - 3 b x - 3 c x\right ) \log {\left (a + b x + c x \right )}^{2}}{b + c} + \frac {\left (a + b x + c x\right ) \log {\left (a + b x + c x \right )}^{3}}{b + c} \]
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Time = 0.20 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.70 \[ \int \log ^3(a+b x+c x) \, dx=\frac {{\left (\log \left (b x + c x + a\right )^{3} - 3 \, \log \left (b x + c x + a\right )^{2} + 6 \, \log \left (b x + c x + a\right ) - 6\right )} {\left (b x + c x + a\right )}}{b + c} \]
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Time = 0.32 (sec) , antiderivative size = 91, normalized size of antiderivative = 1.25 \[ \int \log ^3(a+b x+c x) \, dx=\frac {{\left (b x + c x + a\right )} \log \left (b x + c x + a\right )^{3}}{b + c} - \frac {3 \, {\left (b x + c x + a\right )} \log \left (b x + c x + a\right )^{2}}{b + c} + \frac {6 \, {\left (b x + c x + a\right )} \log \left (b x + c x + a\right )}{b + c} - \frac {6 \, {\left (b x + c x + a\right )}}{b + c} \]
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Time = 1.48 (sec) , antiderivative size = 138, normalized size of antiderivative = 1.89 \[ \int \log ^3(a+b x+c x) \, dx=\frac {6\,a\,\ln \left (a+b\,x+c\,x\right )-6\,c\,x-6\,b\,x-3\,a\,{\ln \left (a+b\,x+c\,x\right )}^2+a\,{\ln \left (a+b\,x+c\,x\right )}^3-3\,b\,x\,{\ln \left (a+b\,x+c\,x\right )}^2+b\,x\,{\ln \left (a+b\,x+c\,x\right )}^3-3\,c\,x\,{\ln \left (a+b\,x+c\,x\right )}^2+c\,x\,{\ln \left (a+b\,x+c\,x\right )}^3+6\,b\,x\,\ln \left (a+b\,x+c\,x\right )+6\,c\,x\,\ln \left (a+b\,x+c\,x\right )}{b+c} \]
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