Integrand size = 28, antiderivative size = 27 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=-3+\frac {x^3}{25 (-3+x)}+\frac {1}{5} (-1-x-\log (2)) \]
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Time = 0.01 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.89, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.107, Rules used = {27, 12, 1864} \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {x^2}{25}-\frac {2 x}{25}-\frac {27}{25 (3-x)} \]
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Rule 12
Rule 27
Rule 1864
Rubi steps \begin{align*} \text {integral}& = \int \frac {-45+30 x-14 x^2+2 x^3}{25 (-3+x)^2} \, dx \\ & = \frac {1}{25} \int \frac {-45+30 x-14 x^2+2 x^3}{(-3+x)^2} \, dx \\ & = \frac {1}{25} \int \left (-2-\frac {27}{(-3+x)^2}+2 x\right ) \, dx \\ & = -\frac {27}{25 (3-x)}-\frac {2 x}{25}+\frac {x^2}{25} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {1}{25} \left (-3+\frac {27}{-3+x}-2 x+x^2\right ) \]
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Time = 0.19 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.63
method | result | size |
default | \(-\frac {2 x}{25}+\frac {x^{2}}{25}+\frac {27}{25 \left (-3+x \right )}\) | \(17\) |
risch | \(-\frac {2 x}{25}+\frac {x^{2}}{25}+\frac {27}{25 \left (-3+x \right )}\) | \(17\) |
gosper | \(\frac {x^{3}-5 x^{2}+45}{25 x -75}\) | \(18\) |
parallelrisch | \(\frac {x^{3}-5 x^{2}+45}{25 x -75}\) | \(18\) |
norman | \(\frac {-\frac {1}{5} x^{2}+\frac {1}{25} x^{3}+\frac {9}{5}}{-3+x}\) | \(19\) |
meijerg | \(\frac {x}{5-\frac {5 x}{3}}+\frac {3 x \left (-\frac {2}{9} x^{2}-2 x +12\right )}{50 \left (1-\frac {x}{3}\right )}-\frac {14 x \left (-x +6\right )}{75 \left (1-\frac {x}{3}\right )}\) | \(47\) |
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Time = 0.24 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.74 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {x^{3} - 5 \, x^{2} + 6 \, x + 27}{25 \, {\left (x - 3\right )}} \]
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Time = 0.04 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.56 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {x^{2}}{25} - \frac {2 x}{25} + \frac {27}{25 x - 75} \]
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Time = 0.19 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.59 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {1}{25} \, x^{2} - \frac {2}{25} \, x + \frac {27}{25 \, {\left (x - 3\right )}} \]
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Time = 0.26 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.59 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {1}{25} \, x^{2} - \frac {2}{25} \, x + \frac {27}{25 \, {\left (x - 3\right )}} \]
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Time = 15.32 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.67 \[ \int \frac {-45+30 x-14 x^2+2 x^3}{225-150 x+25 x^2} \, dx=\frac {27}{25\,\left (x-3\right )}-\frac {2\,x}{25}+\frac {x^2}{25} \]
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