Integrand size = 18, antiderivative size = 21 \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=\frac {2 \sqrt {2+x-x^2}}{3 (-2+x)} \]
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Time = 0.00 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.10, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.056, Rules used = {664} \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=-\frac {2 \sqrt {-x^2+x+2}}{3 (2-x)} \]
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Rule 664
Rubi steps \begin{align*} \text {integral}& = -\frac {2 \sqrt {2+x-x^2}}{3 (2-x)} \\ \end{align*}
Time = 0.14 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=\frac {2 \sqrt {2+x-x^2}}{3 (-2+x)} \]
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Time = 0.28 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.76
method | result | size |
gosper | \(-\frac {2 \left (1+x \right )}{3 \sqrt {-x^{2}+x +2}}\) | \(16\) |
risch | \(-\frac {2 \left (1+x \right )}{3 \sqrt {-x^{2}+x +2}}\) | \(16\) |
trager | \(\frac {2 \sqrt {-x^{2}+x +2}}{3 \left (-2+x \right )}\) | \(18\) |
default | \(\frac {2 \sqrt {-\left (-2+x \right )^{2}+6-3 x}}{3 \left (-2+x \right )}\) | \(22\) |
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none
Time = 0.25 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.81 \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=\frac {2 \, \sqrt {-x^{2} + x + 2}}{3 \, {\left (x - 2\right )}} \]
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\[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=\int \frac {1}{\sqrt {- \left (x - 2\right ) \left (x + 1\right )} \left (x - 2\right )}\, dx \]
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none
Time = 0.30 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.81 \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=\frac {2 \, \sqrt {-x^{2} + x + 2}}{3 \, {\left (x - 2\right )}} \]
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none
Time = 0.32 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.33 \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=-\frac {4}{3 \, {\left (\frac {2 \, \sqrt {-x^{2} + x + 2} - 3}{2 \, x - 1} + 1\right )}} \]
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Time = 0.30 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.90 \[ \int \frac {1}{(-2+x) \sqrt {2+x-x^2}} \, dx=\frac {2\,\sqrt {-x^2+x+2}}{3\,\left (x-2\right )} \]
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