Integrand size = 15, antiderivative size = 94 \[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=-\frac {e^{a/b} \sqrt {\pi } \text {erf}\left (\frac {\sqrt {a-b \text {arccosh}(c+d x)}}{\sqrt {b}}\right )}{2 \sqrt {b} d}+\frac {e^{-\frac {a}{b}} \sqrt {\pi } \text {erfi}\left (\frac {\sqrt {a-b \text {arccosh}(c+d x)}}{\sqrt {b}}\right )}{2 \sqrt {b} d} \]
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Time = 0.09 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.400, Rules used = {5995, 5881, 3389, 2211, 2236, 2235} \[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\frac {\sqrt {\pi } e^{-\frac {a}{b}} \text {erfi}\left (\frac {\sqrt {a-b \text {arccosh}(c+d x)}}{\sqrt {b}}\right )}{2 \sqrt {b} d}-\frac {\sqrt {\pi } e^{a/b} \text {erf}\left (\frac {\sqrt {a-b \text {arccosh}(c+d x)}}{\sqrt {b}}\right )}{2 \sqrt {b} d} \]
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Rule 2211
Rule 2235
Rule 2236
Rule 3389
Rule 5881
Rule 5995
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int \frac {1}{\sqrt {a-b \text {arccosh}(x)}} \, dx,x,c+d x\right )}{d} \\ & = -\frac {\text {Subst}\left (\int \frac {\sinh \left (\frac {a}{b}-\frac {x}{b}\right )}{\sqrt {x}} \, dx,x,a-b \text {arccosh}(c+d x)\right )}{b d} \\ & = -\frac {\text {Subst}\left (\int \frac {e^{-i \left (\frac {i a}{b}-\frac {i x}{b}\right )}}{\sqrt {x}} \, dx,x,a-b \text {arccosh}(c+d x)\right )}{2 b d}+\frac {\text {Subst}\left (\int \frac {e^{i \left (\frac {i a}{b}-\frac {i x}{b}\right )}}{\sqrt {x}} \, dx,x,a-b \text {arccosh}(c+d x)\right )}{2 b d} \\ & = -\frac {\text {Subst}\left (\int e^{\frac {a}{b}-\frac {x^2}{b}} \, dx,x,\sqrt {a-b \text {arccosh}(c+d x)}\right )}{b d}+\frac {\text {Subst}\left (\int e^{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a-b \text {arccosh}(c+d x)}\right )}{b d} \\ & = -\frac {e^{a/b} \sqrt {\pi } \text {erf}\left (\frac {\sqrt {a-b \text {arccosh}(c+d x)}}{\sqrt {b}}\right )}{2 \sqrt {b} d}+\frac {e^{-\frac {a}{b}} \sqrt {\pi } \text {erfi}\left (\frac {\sqrt {a-b \text {arccosh}(c+d x)}}{\sqrt {b}}\right )}{2 \sqrt {b} d} \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 111, normalized size of antiderivative = 1.18 \[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\frac {e^{-\frac {a}{b}} \left (e^{\frac {2 a}{b}} \sqrt {\frac {a}{b}-\text {arccosh}(c+d x)} \Gamma \left (\frac {1}{2},\frac {a}{b}-\text {arccosh}(c+d x)\right )+\sqrt {-\frac {a}{b}+\text {arccosh}(c+d x)} \Gamma \left (\frac {1}{2},-\frac {a}{b}+\text {arccosh}(c+d x)\right )\right )}{2 d \sqrt {a-b \text {arccosh}(c+d x)}} \]
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\[\int \frac {1}{\sqrt {a -b \,\operatorname {arccosh}\left (d x +c \right )}}d x\]
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Exception generated. \[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\text {Exception raised: TypeError} \]
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\[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\int \frac {1}{\sqrt {a - b \operatorname {acosh}{\left (c + d x \right )}}}\, dx \]
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\[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\int { \frac {1}{\sqrt {-b \operatorname {arcosh}\left (d x + c\right ) + a}} \,d x } \]
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\[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\int { \frac {1}{\sqrt {-b \operatorname {arcosh}\left (d x + c\right ) + a}} \,d x } \]
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Timed out. \[ \int \frac {1}{\sqrt {a-b \text {arccosh}(c+d x)}} \, dx=\int \frac {1}{\sqrt {a-b\,\mathrm {acosh}\left (c+d\,x\right )}} \,d x \]
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