Integrand size = 33, antiderivative size = 25 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=\frac {-2+x}{2+x-\frac {1}{15} \left (-1+\frac {1}{2 x}\right ) x^2} \]
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Time = 0.03 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.121, Rules used = {1694, 12, 1828, 8} \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=\frac {240 (2-x)}{361-16 \left (x+\frac {29}{4}\right )^2} \]
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Rule 8
Rule 12
Rule 1694
Rule 1828
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int \frac {240 \left (-361+296 x-16 x^2\right )}{\left (361-16 x^2\right )^2} \, dx,x,\frac {29}{4}+x\right ) \\ & = 240 \text {Subst}\left (\int \frac {-361+296 x-16 x^2}{\left (361-16 x^2\right )^2} \, dx,x,\frac {29}{4}+x\right ) \\ & = \frac {240 (2-x)}{361-(29+4 x)^2}-\frac {120}{361} \text {Subst}\left (\int 0 \, dx,x,\frac {29}{4}+x\right ) \\ & = \frac {240 (2-x)}{361-(29+4 x)^2} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.76 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=-\frac {60 (2-x)}{120+58 x+4 x^2} \]
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Time = 0.06 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.68
method | result | size |
risch | \(\frac {15 x -30}{x^{2}+\frac {29}{2} x +30}\) | \(17\) |
gosper | \(\frac {30 x -60}{2 x^{2}+29 x +60}\) | \(18\) |
default | \(\frac {420}{19 \left (x +12\right )}-\frac {270}{19 \left (5+2 x \right )}\) | \(18\) |
norman | \(\frac {30 x -60}{2 x^{2}+29 x +60}\) | \(19\) |
parallelrisch | \(\frac {60 x -120}{4 x^{2}+58 x +120}\) | \(20\) |
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Time = 0.24 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.68 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=\frac {30 \, {\left (x - 2\right )}}{2 \, x^{2} + 29 \, x + 60} \]
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Time = 0.06 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.60 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=- \frac {60 - 30 x}{2 x^{2} + 29 x + 60} \]
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Time = 0.20 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.68 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=\frac {30 \, {\left (x - 2\right )}}{2 \, x^{2} + 29 \, x + 60} \]
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Time = 0.28 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.68 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=\frac {30 \, {\left (x - 2\right )}}{2 \, x^{2} + 29 \, x + 60} \]
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Time = 12.92 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.76 \[ \int \frac {3540+240 x-60 x^2}{3600+3480 x+1081 x^2+116 x^3+4 x^4} \, dx=\frac {420}{19\,\left (x+12\right )}-\frac {270}{19\,\left (2\,x+5\right )} \]
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