Integrand size = 31, antiderivative size = 27 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=2 x-x^2-3 (1+2 x) \left (-1-x^2+\log (6+x)\right ) \]
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Time = 0.06 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.07, number of steps used = 6, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.129, Rules used = {6874, 1864, 2436, 2332} \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=6 x^3+2 x^2+8 x-6 (x+6) \log (x+6)+33 \log (x+6) \]
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Rule 1864
Rule 2332
Rule 2436
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {45+26 x+112 x^2+18 x^3}{6+x}-6 \log (6+x)\right ) \, dx \\ & = -(6 \int \log (6+x) \, dx)+\int \frac {45+26 x+112 x^2+18 x^3}{6+x} \, dx \\ & = -(6 \text {Subst}(\int \log (x) \, dx,x,6+x))+\int \left (2+4 x+18 x^2+\frac {33}{6+x}\right ) \, dx \\ & = 8 x+2 x^2+6 x^3+33 \log (6+x)-6 (6+x) \log (6+x) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=8 x+2 x^2+6 x^3-3 \log (6+x)-6 x \log (6+x) \]
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Time = 0.51 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.04
method | result | size |
norman | \(-3 \ln \left (6+x \right )+8 x +2 x^{2}+6 x^{3}-6 x \ln \left (6+x \right )\) | \(28\) |
risch | \(-3 \ln \left (6+x \right )+8 x +2 x^{2}+6 x^{3}-6 x \ln \left (6+x \right )\) | \(28\) |
parallelrisch | \(6 x^{3}+2 x^{2}-6 x \ln \left (6+x \right )+8 x -3 \ln \left (6+x \right )-168\) | \(29\) |
parts | \(6 x^{3}+2 x^{2}+8 x +33 \ln \left (6+x \right )-6 \ln \left (6+x \right ) \left (6+x \right )+36\) | \(31\) |
derivativedivides | \(6 \left (6+x \right )^{3}-6 \ln \left (6+x \right ) \left (6+x \right )+3792+632 x -106 \left (6+x \right )^{2}+33 \ln \left (6+x \right )\) | \(35\) |
default | \(6 \left (6+x \right )^{3}-6 \ln \left (6+x \right ) \left (6+x \right )+3792+632 x -106 \left (6+x \right )^{2}+33 \ln \left (6+x \right )\) | \(35\) |
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Time = 0.23 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.93 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=6 \, x^{3} + 2 \, x^{2} - 3 \, {\left (2 \, x + 1\right )} \log \left (x + 6\right ) + 8 \, x \]
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Time = 0.06 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=6 x^{3} + 2 x^{2} - 6 x \log {\left (x + 6 \right )} + 8 x - 3 \log {\left (x + 6 \right )} \]
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Time = 0.18 (sec) , antiderivative size = 42, normalized size of antiderivative = 1.56 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=6 \, x^{3} + 2 \, x^{2} - 6 \, {\left (x - 6 \, \log \left (x + 6\right )\right )} \log \left (x + 6\right ) - 36 \, \log \left (x + 6\right )^{2} + 8 \, x - 3 \, \log \left (x + 6\right ) \]
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Time = 0.27 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=6 \, x^{3} + 2 \, x^{2} - 6 \, x \log \left (x + 6\right ) + 8 \, x - 3 \, \log \left (x + 6\right ) \]
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Time = 0.13 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.04 \[ \int \frac {45+26 x+112 x^2+18 x^3+(-36-6 x) \log (6+x)}{6+x} \, dx=2\,x^2-3\,\ln \left (x+6\right )+6\,x^3-x\,\left (6\,\ln \left (x+6\right )-8\right ) \]
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