Integrand size = 21, antiderivative size = 14 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=\frac {1}{2-x}+\arctan (2-x) \]
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Time = 0.01 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.190, Rules used = {27, 707, 632, 210} \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=\arctan (2-x)+\frac {1}{2-x} \]
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Rule 27
Rule 210
Rule 632
Rule 707
Rubi steps \begin{align*} \text {integral}& = \int \frac {1}{(-2+x)^2 \left (5-4 x+x^2\right )} \, dx \\ & = \frac {1}{2-x}-\int \frac {1}{5-4 x+x^2} \, dx \\ & = \frac {1}{2-x}+2 \text {Subst}\left (\int \frac {1}{-4-x^2} \, dx,x,-4+2 x\right ) \\ & = \frac {1}{2-x}+\arctan (2-x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=-\frac {1}{-2+x}+\arctan (2-x) \]
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Time = 0.24 (sec) , antiderivative size = 15, normalized size of antiderivative = 1.07
method | result | size |
default | \(-\frac {1}{-2+x}-\arctan \left (-2+x \right )\) | \(15\) |
risch | \(-\frac {1}{-2+x}-\arctan \left (-2+x \right )\) | \(15\) |
parallelrisch | \(\frac {i \ln \left (x -2-i\right ) x -i \ln \left (x -2+i\right ) x -2 i \ln \left (x -2-i\right )+2 i \ln \left (x -2+i\right )-x}{-4+2 x}\) | \(50\) |
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Time = 0.24 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.21 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=-\frac {{\left (x - 2\right )} \arctan \left (x - 2\right ) + 1}{x - 2} \]
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Time = 0.08 (sec) , antiderivative size = 10, normalized size of antiderivative = 0.71 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=- \operatorname {atan}{\left (x - 2 \right )} - \frac {1}{x - 2} \]
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Time = 0.28 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=-\frac {1}{x - 2} - \arctan \left (x - 2\right ) \]
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Time = 0.30 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=-\frac {1}{x - 2} - \arctan \left (x - 2\right ) \]
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Time = 0.09 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {1}{\left (4-4 x+x^2\right ) \left (5-4 x+x^2\right )} \, dx=-\mathrm {atan}\left (x-2\right )-\frac {1}{x-2} \]
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