Integrand size = 19, antiderivative size = 11 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=\frac {\text {arccosh}\left (\frac {b x}{2}\right )}{b} \]
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Time = 0.00 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.053, Rules used = {54} \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=\frac {\text {arccosh}\left (\frac {b x}{2}\right )}{b} \]
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Rule 54
Rubi steps \begin{align*} \text {integral}& = \frac {\cosh ^{-1}\left (\frac {b x}{2}\right )}{b} \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(25\) vs. \(2(11)=22\).
Time = 0.00 (sec) , antiderivative size = 25, normalized size of antiderivative = 2.27 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=\frac {2 \text {arctanh}\left (\frac {\sqrt {2+b x}}{\sqrt {-2+b x}}\right )}{b} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(56\) vs. \(2(9)=18\).
Time = 0.51 (sec) , antiderivative size = 57, normalized size of antiderivative = 5.18
method | result | size |
default | \(\frac {\sqrt {\left (b x -2\right ) \left (b x +2\right )}\, \ln \left (\frac {b^{2} x}{\sqrt {b^{2}}}+\sqrt {b^{2} x^{2}-4}\right )}{\sqrt {b x -2}\, \sqrt {b x +2}\, \sqrt {b^{2}}}\) | \(57\) |
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Leaf count of result is larger than twice the leaf count of optimal. 26 vs. \(2 (9) = 18\).
Time = 0.22 (sec) , antiderivative size = 26, normalized size of antiderivative = 2.36 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=-\frac {\log \left (-b x + \sqrt {b x + 2} \sqrt {b x - 2}\right )}{b} \]
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Result contains complex when optimal does not.
Time = 12.90 (sec) , antiderivative size = 75, normalized size of antiderivative = 6.82 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=\frac {{G_{6, 6}^{6, 2}\left (\begin {matrix} \frac {1}{4}, \frac {3}{4} & \frac {1}{2}, \frac {1}{2}, 1, 1 \\0, \frac {1}{4}, \frac {1}{2}, \frac {3}{4}, 1, 0 & \end {matrix} \middle | {\frac {4 e^{2 i \pi }}{b^{2} x^{2}}} \right )}}{4 \pi ^{\frac {3}{2}} b} + \frac {i {G_{6, 6}^{2, 6}\left (\begin {matrix} - \frac {1}{2}, - \frac {1}{4}, 0, \frac {1}{4}, \frac {1}{2}, 1 & \\- \frac {1}{4}, \frac {1}{4} & - \frac {1}{2}, 0, 0, 0 \end {matrix} \middle | {\frac {4}{b^{2} x^{2}}} \right )}}{4 \pi ^{\frac {3}{2}} b} \]
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Leaf count of result is larger than twice the leaf count of optimal. 26 vs. \(2 (9) = 18\).
Time = 0.19 (sec) , antiderivative size = 26, normalized size of antiderivative = 2.36 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=\frac {\log \left (2 \, b^{2} x + 2 \, \sqrt {b^{2} x^{2} - 4} b\right )}{b} \]
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Leaf count of result is larger than twice the leaf count of optimal. 23 vs. \(2 (9) = 18\).
Time = 0.29 (sec) , antiderivative size = 23, normalized size of antiderivative = 2.09 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=-\frac {2 \, \log \left (\sqrt {b x + 2} - \sqrt {b x - 2}\right )}{b} \]
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Time = 0.00 (sec) , antiderivative size = 50, normalized size of antiderivative = 4.55 \[ \int \frac {1}{\sqrt {-2+b x} \sqrt {2+b x}} \, dx=-\frac {4\,\mathrm {atan}\left (\frac {b\,\left (-\sqrt {b\,x-2}+\sqrt {2}\,1{}\mathrm {i}\right )}{\left (\sqrt {2}-\sqrt {b\,x+2}\right )\,\sqrt {-b^2}}\right )}{\sqrt {-b^2}} \]
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