Integrand size = 12, antiderivative size = 77 \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\frac {\sqrt {\pi } \text {erf}\left (\frac {\sqrt {f} \sqrt {d x}}{\sqrt {d}}\right )}{2 \sqrt {d} \sqrt {f}}+\frac {\sqrt {\pi } \text {erfi}\left (\frac {\sqrt {f} \sqrt {d x}}{\sqrt {d}}\right )}{2 \sqrt {d} \sqrt {f}} \]
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Time = 0.06 (sec) , antiderivative size = 77, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {3388, 2211, 2235, 2236} \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\frac {\sqrt {\pi } \text {erf}\left (\frac {\sqrt {f} \sqrt {d x}}{\sqrt {d}}\right )}{2 \sqrt {d} \sqrt {f}}+\frac {\sqrt {\pi } \text {erfi}\left (\frac {\sqrt {f} \sqrt {d x}}{\sqrt {d}}\right )}{2 \sqrt {d} \sqrt {f}} \]
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Rule 2211
Rule 2235
Rule 2236
Rule 3388
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \int \frac {e^{-f x}}{\sqrt {d x}} \, dx+\frac {1}{2} \int \frac {e^{f x}}{\sqrt {d x}} \, dx \\ & = \frac {\text {Subst}\left (\int e^{-\frac {f x^2}{d}} \, dx,x,\sqrt {d x}\right )}{d}+\frac {\text {Subst}\left (\int e^{\frac {f x^2}{d}} \, dx,x,\sqrt {d x}\right )}{d} \\ & = \frac {\sqrt {\pi } \text {erf}\left (\frac {\sqrt {f} \sqrt {d x}}{\sqrt {d}}\right )}{2 \sqrt {d} \sqrt {f}}+\frac {\sqrt {\pi } \text {erfi}\left (\frac {\sqrt {f} \sqrt {d x}}{\sqrt {d}}\right )}{2 \sqrt {d} \sqrt {f}} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.62 \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\frac {\sqrt {-f x} \Gamma \left (\frac {1}{2},-f x\right )-\sqrt {f x} \Gamma \left (\frac {1}{2},f x\right )}{2 f \sqrt {d x}} \]
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Result contains complex when optimal does not.
Time = 0.03 (sec) , antiderivative size = 72, normalized size of antiderivative = 0.94
method | result | size |
meijerg | \(-\frac {i \sqrt {\pi }\, \sqrt {x}\, \sqrt {2}\, \sqrt {i f}\, \left (\frac {\sqrt {i f}\, \sqrt {2}\, \operatorname {erf}\left (\sqrt {x}\, \sqrt {f}\right )}{2 \sqrt {f}}+\frac {\sqrt {i f}\, \sqrt {2}\, \operatorname {erfi}\left (\sqrt {x}\, \sqrt {f}\right )}{2 \sqrt {f}}\right )}{2 \sqrt {d x}\, f}\) | \(72\) |
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none
Time = 0.26 (sec) , antiderivative size = 59, normalized size of antiderivative = 0.77 \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\frac {\sqrt {\pi } \sqrt {\frac {f}{d}} \operatorname {erf}\left (\sqrt {d x} \sqrt {\frac {f}{d}}\right ) - \sqrt {\pi } \sqrt {-\frac {f}{d}} \operatorname {erf}\left (\sqrt {d x} \sqrt {-\frac {f}{d}}\right )}{2 \, f} \]
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Result contains complex when optimal does not.
Time = 0.54 (sec) , antiderivative size = 66, normalized size of antiderivative = 0.86 \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\frac {\sqrt {2} \sqrt {\pi } e^{- \frac {i \pi }{4}} C\left (\frac {\sqrt {2} \sqrt {f} \sqrt {x} e^{\frac {i \pi }{4}}}{\sqrt {\pi }}\right ) \Gamma \left (\frac {1}{4}\right )}{4 \sqrt {d} \sqrt {f} \Gamma \left (\frac {5}{4}\right )} \]
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Leaf count of result is larger than twice the leaf count of optimal. 117 vs. \(2 (49) = 98\).
Time = 0.19 (sec) , antiderivative size = 117, normalized size of antiderivative = 1.52 \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\frac {4 \, \sqrt {d x} \cosh \left (f x\right ) - \frac {{\left (\frac {2 \, \sqrt {d x} d e^{\left (f x\right )}}{f} + \frac {2 \, \sqrt {d x} d e^{\left (-f x\right )}}{f} - \frac {\sqrt {\pi } d \operatorname {erf}\left (\sqrt {d x} \sqrt {\frac {f}{d}}\right )}{f \sqrt {\frac {f}{d}}} - \frac {\sqrt {\pi } d \operatorname {erf}\left (\sqrt {d x} \sqrt {-\frac {f}{d}}\right )}{f \sqrt {-\frac {f}{d}}}\right )} f}{d}}{2 \, d} \]
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Time = 0.26 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.78 \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=-\frac {\frac {\sqrt {\pi } d \operatorname {erf}\left (-\frac {\sqrt {d f} \sqrt {d x}}{d}\right )}{\sqrt {d f}} + \frac {\sqrt {\pi } d \operatorname {erf}\left (-\frac {\sqrt {-d f} \sqrt {d x}}{d}\right )}{\sqrt {-d f}}}{2 \, d} \]
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Timed out. \[ \int \frac {\cosh (f x)}{\sqrt {d x}} \, dx=\int \frac {\mathrm {cosh}\left (f\,x\right )}{\sqrt {d\,x}} \,d x \]
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