Integrand size = 10, antiderivative size = 20 \[ \int \sqrt {\cosh (a+b x)} \, dx=-\frac {2 i E\left (\left .\frac {1}{2} i (a+b x)\right |2\right )}{b} \]
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Time = 0.01 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.100, Rules used = {2719} \[ \int \sqrt {\cosh (a+b x)} \, dx=-\frac {2 i E\left (\left .\frac {1}{2} i (a+b x)\right |2\right )}{b} \]
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Rule 2719
Rubi steps \begin{align*} \text {integral}& = -\frac {2 i E\left (\left .\frac {1}{2} i (a+b x)\right |2\right )}{b} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00 \[ \int \sqrt {\cosh (a+b x)} \, dx=-\frac {2 i E\left (\left .\frac {1}{2} i (a+b x)\right |2\right )}{b} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(134\) vs. \(2(46)=92\).
Time = 0.38 (sec) , antiderivative size = 135, normalized size of antiderivative = 6.75
method | result | size |
default | \(-\frac {2 \sqrt {\left (-1+2 \cosh \left (\frac {b x}{2}+\frac {a}{2}\right )^{2}\right ) \sinh \left (\frac {b x}{2}+\frac {a}{2}\right )^{2}}\, \sqrt {-\sinh \left (\frac {b x}{2}+\frac {a}{2}\right )^{2}}\, \sqrt {-2 \cosh \left (\frac {b x}{2}+\frac {a}{2}\right )^{2}+1}\, \operatorname {EllipticE}\left (\cosh \left (\frac {b x}{2}+\frac {a}{2}\right ), \sqrt {2}\right )}{\sqrt {2 \sinh \left (\frac {b x}{2}+\frac {a}{2}\right )^{4}+\sinh \left (\frac {b x}{2}+\frac {a}{2}\right )^{2}}\, \sinh \left (\frac {b x}{2}+\frac {a}{2}\right ) \sqrt {-1+2 \cosh \left (\frac {b x}{2}+\frac {a}{2}\right )^{2}}\, b}\) | \(135\) |
risch | \(\frac {\sqrt {2}\, \sqrt {\left (1+{\mathrm e}^{2 b x +2 a}\right ) {\mathrm e}^{-b x -a}}}{b}+\frac {\left (-\frac {2 \left (1+{\mathrm e}^{2 b x +2 a}\right )}{\sqrt {\left (1+{\mathrm e}^{2 b x +2 a}\right ) {\mathrm e}^{b x +a}}}+\frac {i \sqrt {-i \left ({\mathrm e}^{b x +a}+i\right )}\, \sqrt {2}\, \sqrt {i \left ({\mathrm e}^{b x +a}-i\right )}\, \sqrt {i {\mathrm e}^{b x +a}}\, \left (-2 i \operatorname {EllipticE}\left (\sqrt {-i \left ({\mathrm e}^{b x +a}+i\right )}, \frac {\sqrt {2}}{2}\right )+i \operatorname {EllipticF}\left (\sqrt {-i \left ({\mathrm e}^{b x +a}+i\right )}, \frac {\sqrt {2}}{2}\right )\right )}{\sqrt {{\mathrm e}^{3 b x +3 a}+{\mathrm e}^{b x +a}}}\right ) \sqrt {2}\, \sqrt {\left (1+{\mathrm e}^{2 b x +2 a}\right ) {\mathrm e}^{-b x -a}}\, \sqrt {\left (1+{\mathrm e}^{2 b x +2 a}\right ) {\mathrm e}^{b x +a}}}{b \left (1+{\mathrm e}^{2 b x +2 a}\right )}\) | \(230\) |
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.08 (sec) , antiderivative size = 37, normalized size of antiderivative = 1.85 \[ \int \sqrt {\cosh (a+b x)} \, dx=-\frac {2 \, {\left (\sqrt {2} {\rm weierstrassZeta}\left (-4, 0, {\rm weierstrassPInverse}\left (-4, 0, \cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )\right ) + \sqrt {\cosh \left (b x + a\right )}\right )}}{b} \]
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\[ \int \sqrt {\cosh (a+b x)} \, dx=\int \sqrt {\cosh {\left (a + b x \right )}}\, dx \]
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\[ \int \sqrt {\cosh (a+b x)} \, dx=\int { \sqrt {\cosh \left (b x + a\right )} \,d x } \]
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\[ \int \sqrt {\cosh (a+b x)} \, dx=\int { \sqrt {\cosh \left (b x + a\right )} \,d x } \]
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Timed out. \[ \int \sqrt {\cosh (a+b x)} \, dx=\int \sqrt {\mathrm {cosh}\left (a+b\,x\right )} \,d x \]
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