Integrand size = 10, antiderivative size = 54 \[ \int (b+a x)^2 \log (x) \, dx=-b^2 x-\frac {1}{2} a b x^2-\frac {a^2 x^3}{9}-\frac {b^3 \log (x)}{3 a}+\frac {(b+a x)^3 \log (x)}{3 a} \]
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Time = 0.02 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.400, Rules used = {32, 2350, 12, 45} \[ \int (b+a x)^2 \log (x) \, dx=-\frac {a^2 x^3}{9}-\frac {b^3 \log (x)}{3 a}-\frac {1}{2} a b x^2+\frac {\log (x) (a x+b)^3}{3 a}-b^2 x \]
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Rule 12
Rule 32
Rule 45
Rule 2350
Rubi steps \begin{align*} \text {integral}& = \frac {(b+a x)^3 \log (x)}{3 a}-\int \frac {(b+a x)^3}{3 a x} \, dx \\ & = \frac {(b+a x)^3 \log (x)}{3 a}-\frac {\int \frac {(b+a x)^3}{x} \, dx}{3 a} \\ & = \frac {(b+a x)^3 \log (x)}{3 a}-\frac {\int \left (3 a b^2+\frac {b^3}{x}+3 a^2 b x+a^3 x^2\right ) \, dx}{3 a} \\ & = -b^2 x-\frac {1}{2} a b x^2-\frac {a^2 x^3}{9}-\frac {b^3 \log (x)}{3 a}+\frac {(b+a x)^3 \log (x)}{3 a} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 53, normalized size of antiderivative = 0.98 \[ \int (b+a x)^2 \log (x) \, dx=-b^2 x-\frac {1}{2} a b x^2-\frac {a^2 x^3}{9}+b^2 x \log (x)+a b x^2 \log (x)+\frac {1}{3} a^2 x^3 \log (x) \]
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Time = 0.07 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.87
method | result | size |
risch | \(-b^{2} x -\frac {a b \,x^{2}}{2}-\frac {a^{2} x^{3}}{9}-\frac {b^{3} \ln \left (x \right )}{3 a}+\frac {\left (a x +b \right )^{3} \ln \left (x \right )}{3 a}\) | \(47\) |
default | \(a^{2} \left (-\frac {x^{3}}{9}+\frac {x^{3} \ln \left (x \right )}{3}\right )+2 a b \left (-\frac {x^{2}}{4}+\frac {x^{2} \ln \left (x \right )}{2}\right )+b^{2} \left (-x +x \ln \left (x \right )\right )\) | \(48\) |
norman | \(b^{2} x \ln \left (x \right )+a b \,x^{2} \ln \left (x \right )-\frac {a^{2} x^{3}}{9}-b^{2} x -\frac {a b \,x^{2}}{2}+\frac {a^{2} x^{3} \ln \left (x \right )}{3}\) | \(48\) |
parallelrisch | \(b^{2} x \ln \left (x \right )+a b \,x^{2} \ln \left (x \right )-\frac {a^{2} x^{3}}{9}-b^{2} x -\frac {a b \,x^{2}}{2}+\frac {a^{2} x^{3} \ln \left (x \right )}{3}\) | \(48\) |
parts | \(\frac {a^{2} x^{3} \ln \left (x \right )}{3}+a b \,x^{2} \ln \left (x \right )+b^{2} x \ln \left (x \right )+\frac {b^{3} \ln \left (x \right )}{3 a}-\frac {\frac {a^{3} x^{3}}{3}+\frac {3 a^{2} b \,x^{2}}{2}+3 a \,b^{2} x +b^{3} \ln \left (x \right )}{3 a}\) | \(73\) |
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Time = 0.23 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.87 \[ \int (b+a x)^2 \log (x) \, dx=-\frac {1}{9} \, a^{2} x^{3} - \frac {1}{2} \, a b x^{2} - b^{2} x + \frac {1}{3} \, {\left (a^{2} x^{3} + 3 \, a b x^{2} + 3 \, b^{2} x\right )} \log \left (x\right ) \]
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Time = 0.06 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.81 \[ \int (b+a x)^2 \log (x) \, dx=- \frac {a^{2} x^{3}}{9} - \frac {a b x^{2}}{2} - b^{2} x + \left (\frac {a^{2} x^{3}}{3} + a b x^{2} + b^{2} x\right ) \log {\left (x \right )} \]
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Time = 0.18 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.87 \[ \int (b+a x)^2 \log (x) \, dx=-\frac {1}{9} \, a^{2} x^{3} - \frac {1}{2} \, a b x^{2} - b^{2} x + \frac {1}{3} \, {\left (a^{2} x^{3} + 3 \, a b x^{2} + 3 \, b^{2} x\right )} \log \left (x\right ) \]
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Time = 0.29 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.87 \[ \int (b+a x)^2 \log (x) \, dx=\frac {1}{3} \, a^{2} x^{3} \log \left (x\right ) - \frac {1}{9} \, a^{2} x^{3} + a b x^{2} \log \left (x\right ) - \frac {1}{2} \, a b x^{2} + b^{2} x \log \left (x\right ) - b^{2} x \]
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Time = 0.18 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.87 \[ \int (b+a x)^2 \log (x) \, dx=b^2\,x\,\ln \left (x\right )-\frac {a^2\,x^3}{9}-b^2\,x+\frac {a^2\,x^3\,\ln \left (x\right )}{3}-\frac {a\,b\,x^2}{2}+a\,b\,x^2\,\ln \left (x\right ) \]
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