Integrand size = 14, antiderivative size = 27 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=-\frac {a A}{2 x^2}-\frac {A b+a B}{x}+b B \log (x) \]
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Time = 0.01 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.071, Rules used = {77} \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=-\frac {a B+A b}{x}-\frac {a A}{2 x^2}+b B \log (x) \]
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Rule 77
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a A}{x^3}+\frac {A b+a B}{x^2}+\frac {b B}{x}\right ) \, dx \\ & = -\frac {a A}{2 x^2}-\frac {A b+a B}{x}+b B \log (x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.04 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=-\frac {a A}{2 x^2}+\frac {-A b-a B}{x}+b B \log (x) \]
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Time = 0.02 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.96
method | result | size |
default | \(b B \ln \left (x \right )-\frac {A b +B a}{x}-\frac {a A}{2 x^{2}}\) | \(26\) |
norman | \(\frac {\left (-A b -B a \right ) x -\frac {A a}{2}}{x^{2}}+b B \ln \left (x \right )\) | \(27\) |
risch | \(\frac {\left (-A b -B a \right ) x -\frac {A a}{2}}{x^{2}}+b B \ln \left (x \right )\) | \(27\) |
parallelrisch | \(-\frac {-2 B b \ln \left (x \right ) x^{2}+2 A b x +2 B a x +A a}{2 x^{2}}\) | \(29\) |
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none
Time = 0.22 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.07 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=\frac {2 \, B b x^{2} \log \left (x\right ) - A a - 2 \, {\left (B a + A b\right )} x}{2 \, x^{2}} \]
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Time = 0.11 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=B b \log {\left (x \right )} + \frac {- A a + x \left (- 2 A b - 2 B a\right )}{2 x^{2}} \]
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none
Time = 0.28 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.93 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=B b \log \left (x\right ) - \frac {A a + 2 \, {\left (B a + A b\right )} x}{2 \, x^{2}} \]
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none
Time = 0.28 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.96 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=B b \log \left ({\left | x \right |}\right ) - \frac {A a + 2 \, {\left (B a + A b\right )} x}{2 \, x^{2}} \]
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Time = 0.05 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.93 \[ \int \frac {(a+b x) (A+B x)}{x^3} \, dx=B\,b\,\ln \left (x\right )-\frac {\frac {A\,a}{2}+x\,\left (A\,b+B\,a\right )}{x^2} \]
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