Integrand size = 23, antiderivative size = 23 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=\frac {1}{3} \left (-x+3 \left (2+\frac {x}{10+x}\right )-\log (5)\right ) \]
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Time = 0.01 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.57, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {27, 12, 697} \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=-\frac {x}{3}-\frac {10}{x+10} \]
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Rule 12
Rule 27
Rule 697
Rubi steps \begin{align*} \text {integral}& = \int \frac {-70-20 x-x^2}{3 (10+x)^2} \, dx \\ & = \frac {1}{3} \int \frac {-70-20 x-x^2}{(10+x)^2} \, dx \\ & = \frac {1}{3} \int \left (-1+\frac {30}{(10+x)^2}\right ) \, dx \\ & = -\frac {x}{3}-\frac {10}{10+x} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.65 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=\frac {1}{3} \left (-x-\frac {30}{10+x}\right ) \]
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Time = 0.80 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.52
method | result | size |
default | \(-\frac {x}{3}-\frac {10}{x +10}\) | \(12\) |
risch | \(-\frac {x}{3}-\frac {10}{x +10}\) | \(12\) |
gosper | \(-\frac {x^{2}-70}{3 \left (x +10\right )}\) | \(13\) |
parallelrisch | \(-\frac {x^{2}-70}{3 \left (x +10\right )}\) | \(13\) |
norman | \(\frac {-\frac {x^{2}}{3}+\frac {70}{3}}{x +10}\) | \(14\) |
meijerg | \(\frac {13 x}{30 \left (1+\frac {x}{10}\right )}-\frac {x \left (6+\frac {3 x}{10}\right )}{9 \left (1+\frac {x}{10}\right )}\) | \(27\) |
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Time = 0.24 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.65 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=-\frac {x^{2} + 10 \, x + 30}{3 \, {\left (x + 10\right )}} \]
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Time = 0.03 (sec) , antiderivative size = 8, normalized size of antiderivative = 0.35 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=- \frac {x}{3} - \frac {10}{x + 10} \]
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Time = 0.21 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.48 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=-\frac {1}{3} \, x - \frac {10}{x + 10} \]
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Time = 0.27 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.48 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=-\frac {1}{3} \, x - \frac {10}{x + 10} \]
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Time = 13.26 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.48 \[ \int \frac {-70-20 x-x^2}{300+60 x+3 x^2} \, dx=-\frac {x}{3}-\frac {10}{x+10} \]
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