Integrand size = 24, antiderivative size = 12 \[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=-2 E\left (\left .\arcsin \left (\sqrt {-x}\right )\right |-1\right ) \]
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Time = 0.00 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.042, Rules used = {111} \[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=-2 E\left (\left .\arcsin \left (\sqrt {-x}\right )\right |-1\right ) \]
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Rule 111
Rubi steps \begin{align*} \text {integral}& = -2 E\left (\left .\sin ^{-1}\left (\sqrt {-x}\right )\right |-1\right ) \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 0.04 (sec) , antiderivative size = 66, normalized size of antiderivative = 5.50 \[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=-\frac {2 x \sqrt {1-x^2} \left (-3 \operatorname {Hypergeometric2F1}\left (\frac {1}{4},\frac {1}{2},\frac {5}{4},x^2\right )+x \operatorname {Hypergeometric2F1}\left (\frac {1}{2},\frac {3}{4},\frac {7}{4},x^2\right )\right )}{3 \sqrt {1-x} \sqrt {-x (1+x)}} \]
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Time = 1.93 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.42
method | result | size |
default | \(2 \sqrt {2}\, E\left (\sqrt {1+x}, \frac {\sqrt {2}}{2}\right )\) | \(17\) |
elliptic | \(\frac {\sqrt {x \left (x^{2}-1\right )}\, \left (\frac {\sqrt {1+x}\, \sqrt {2-2 x}\, \sqrt {-x}\, F\left (\sqrt {1+x}, \frac {\sqrt {2}}{2}\right )}{\sqrt {x^{3}-x}}-\frac {\sqrt {1+x}\, \sqrt {2-2 x}\, \sqrt {-x}\, \left (-2 E\left (\sqrt {1+x}, \frac {\sqrt {2}}{2}\right )+F\left (\sqrt {1+x}, \frac {\sqrt {2}}{2}\right )\right )}{\sqrt {x^{3}-x}}\right )}{\sqrt {-x}\, \sqrt {1-x}\, \sqrt {1+x}}\) | \(120\) |
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.09 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.33 \[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=2 \, {\rm weierstrassPInverse}\left (4, 0, x\right ) + 2 \, {\rm weierstrassZeta}\left (4, 0, {\rm weierstrassPInverse}\left (4, 0, x\right )\right ) \]
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\[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=\int \frac {\sqrt {1 - x}}{\sqrt {- x} \sqrt {x + 1}}\, dx \]
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\[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=\int { \frac {\sqrt {-x + 1}}{\sqrt {-x} \sqrt {x + 1}} \,d x } \]
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\[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=\int { \frac {\sqrt {-x + 1}}{\sqrt {-x} \sqrt {x + 1}} \,d x } \]
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Timed out. \[ \int \frac {\sqrt {1-x}}{\sqrt {-x} \sqrt {1+x}} \, dx=\int \frac {\sqrt {1-x}}{\sqrt {-x}\,\sqrt {x+1}} \,d x \]
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