Integrand size = 16, antiderivative size = 292 \[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=-\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {3 b^{3/2} e^{a/b} \sqrt {\pi } \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{32 c^3}-\frac {b^{3/2} e^{\frac {3 a}{b}} \sqrt {\frac {\pi }{3}} \text {erf}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{96 c^3}+\frac {3 b^{3/2} e^{-\frac {a}{b}} \sqrt {\pi } \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{32 c^3}+\frac {b^{3/2} e^{-\frac {3 a}{b}} \sqrt {\frac {\pi }{3}} \text {erfi}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{96 c^3} \]
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Time = 0.83 (sec) , antiderivative size = 292, normalized size of antiderivative = 1.00, number of steps used = 22, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.625, Rules used = {5884, 5939, 5915, 5881, 3389, 2211, 2236, 2235, 5887, 5556} \[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=-\frac {3 \sqrt {\pi } b^{3/2} e^{a/b} \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{32 c^3}-\frac {\sqrt {\frac {\pi }{3}} b^{3/2} e^{\frac {3 a}{b}} \text {erf}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{96 c^3}+\frac {3 \sqrt {\pi } b^{3/2} e^{-\frac {a}{b}} \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{32 c^3}+\frac {\sqrt {\frac {\pi }{3}} b^{3/2} e^{-\frac {3 a}{b}} \text {erfi}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{96 c^3}-\frac {b \sqrt {c x-1} \sqrt {c x+1} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {b x^2 \sqrt {c x-1} \sqrt {c x+1} \sqrt {a+b \text {arccosh}(c x)}}{6 c} \]
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Rule 2211
Rule 2235
Rule 2236
Rule 3389
Rule 5556
Rule 5881
Rule 5884
Rule 5887
Rule 5915
Rule 5939
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {1}{2} (b c) \int \frac {x^3 \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {-1+c x} \sqrt {1+c x}} \, dx \\ & = -\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}+\frac {1}{12} b^2 \int \frac {x^2}{\sqrt {a+b \text {arccosh}(c x)}} \, dx-\frac {b \int \frac {x \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {-1+c x} \sqrt {1+c x}} \, dx}{3 c} \\ & = -\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {b \text {Subst}\left (\int \frac {\cosh ^2\left (\frac {a}{b}-\frac {x}{b}\right ) \sinh \left (\frac {a}{b}-\frac {x}{b}\right )}{\sqrt {x}} \, dx,x,a+b \text {arccosh}(c x)\right )}{12 c^3}+\frac {b^2 \int \frac {1}{\sqrt {a+b \text {arccosh}(c x)}} \, dx}{6 c^2} \\ & = -\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {b \text {Subst}\left (\int \left (\frac {\sinh \left (\frac {3 a}{b}-\frac {3 x}{b}\right )}{4 \sqrt {x}}+\frac {\sinh \left (\frac {a}{b}-\frac {x}{b}\right )}{4 \sqrt {x}}\right ) \, dx,x,a+b \text {arccosh}(c x)\right )}{12 c^3}-\frac {b \text {Subst}\left (\int \frac {\sinh \left (\frac {a}{b}-\frac {x}{b}\right )}{\sqrt {x}} \, dx,x,a+b \text {arccosh}(c x)\right )}{6 c^3} \\ & = -\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {b \text {Subst}\left (\int \frac {\sinh \left (\frac {3 a}{b}-\frac {3 x}{b}\right )}{\sqrt {x}} \, dx,x,a+b \text {arccosh}(c x)\right )}{48 c^3}-\frac {b \text {Subst}\left (\int \frac {\sinh \left (\frac {a}{b}-\frac {x}{b}\right )}{\sqrt {x}} \, dx,x,a+b \text {arccosh}(c x)\right )}{48 c^3}-\frac {b \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 x)\right )}{12 c^3}+\frac {b \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 x)\right )}{12 c^3} \\ & = -\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {b \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 x)\right )}{96 c^3}+\frac {b \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 x)\right )}{96 c^3}-\frac {b \text {Subst}\left (\int \frac {e^{-i \left (\frac {3 i a}{b}-\frac {3 i x}{b}\right )}}{\sqrt {x}} \, dx,x,a+b \text {arccosh}(c x)\right )}{96 c^3}+\frac {b \text {Subst}\left (\int \frac {e^{i \left (\frac {3 i a}{b}-\frac {3 i x}{b}\right )}}{\sqrt {x}} \, dx,x,a+b \text {arccosh}(c x)\right )}{96 c^3}-\frac {b \text {Subst}\left (\int e^{\frac {a}{b}-\frac {x^2}{b}} \, dx,x,\sqrt {a+b \text {arccosh}(c x)}\right )}{6 c^3}+\frac {b \text {Subst}\left (\int e^{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b \text {arccosh}(c x)}\right )}{6 c^3} \\ & = -\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {b^{3/2} e^{a/b} \sqrt {\pi } \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{12 c^3}+\frac {b^{3/2} e^{-\frac {a}{b}} \sqrt {\pi } \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{12 c^3}-\frac {b \text {Subst}\left (\int e^{\frac {3 a}{b}-\frac {3 x^2}{b}} \, dx,x,\sqrt {a+b \text {arccosh}(c x)}\right )}{48 c^3}-\frac {b \text {Subst}\left (\int e^{\frac {a}{b}-\frac {x^2}{b}} \, dx,x,\sqrt {a+b \text {arccosh}(c x)}\right )}{48 c^3}+\frac {b \text {Subst}\left (\int e^{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b \text {arccosh}(c x)}\right )}{48 c^3}+\frac {b \text {Subst}\left (\int e^{-\frac {3 a}{b}+\frac {3 x^2}{b}} \, dx,x,\sqrt {a+b \text {arccosh}(c x)}\right )}{48 c^3} \\ & = -\frac {b \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{3 c^3}-\frac {b x^2 \sqrt {-1+c x} \sqrt {1+c x} \sqrt {a+b \text {arccosh}(c x)}}{6 c}+\frac {1}{3} x^3 (a+b \text {arccosh}(c x))^{3/2}-\frac {3 b^{3/2} e^{a/b} \sqrt {\pi } \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{32 c^3}-\frac {b^{3/2} e^{\frac {3 a}{b}} \sqrt {\frac {\pi }{3}} \text {erf}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{96 c^3}+\frac {3 b^{3/2} e^{-\frac {a}{b}} \sqrt {\pi } \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{32 c^3}+\frac {b^{3/2} e^{-\frac {3 a}{b}} \sqrt {\frac {\pi }{3}} \text {erfi}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right )}{96 c^3} \\ \end{align*}
Time = 1.95 (sec) , antiderivative size = 540, normalized size of antiderivative = 1.85 \[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=\frac {a e^{-\frac {3 a}{b}} \sqrt {a+b \text {arccosh}(c x)} \left (9 e^{\frac {4 a}{b}} \sqrt {-\frac {a+b \text {arccosh}(c x)}{b}} \Gamma \left (\frac {3}{2},\frac {a}{b}+\text {arccosh}(c x)\right )+\sqrt {3} \sqrt {\frac {a}{b}+\text {arccosh}(c x)} \Gamma \left (\frac {3}{2},-\frac {3 (a+b \text {arccosh}(c x))}{b}\right )+9 e^{\frac {2 a}{b}} \sqrt {\frac {a}{b}+\text {arccosh}(c x)} \Gamma \left (\frac {3}{2},-\frac {a+b \text {arccosh}(c x)}{b}\right )+\sqrt {3} e^{\frac {6 a}{b}} \sqrt {-\frac {a+b \text {arccosh}(c x)}{b}} \Gamma \left (\frac {3}{2},\frac {3 (a+b \text {arccosh}(c x))}{b}\right )\right )}{72 c^3 \sqrt {-\frac {(a+b \text {arccosh}(c x))^2}{b^2}}}+\frac {\sqrt {b} \left (9 \left (-12 \sqrt {b} \sqrt {\frac {-1+c x}{1+c x}} (1+c x) \sqrt {a+b \text {arccosh}(c x)}+8 \sqrt {b} c x \text {arccosh}(c x) \sqrt {a+b \text {arccosh}(c x)}+(2 a+3 b) \sqrt {\pi } \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right ) \left (\cosh \left (\frac {a}{b}\right )-\sinh \left (\frac {a}{b}\right )\right )+(2 a-3 b) \sqrt {\pi } \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right ) \left (\cosh \left (\frac {a}{b}\right )+\sinh \left (\frac {a}{b}\right )\right )\right )+(2 a+b) \sqrt {3 \pi } \text {erfi}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right ) \left (\cosh \left (\frac {3 a}{b}\right )-\sinh \left (\frac {3 a}{b}\right )\right )+(2 a-b) \sqrt {3 \pi } \text {erf}\left (\frac {\sqrt {3} \sqrt {a+b \text {arccosh}(c x)}}{\sqrt {b}}\right ) \left (\cosh \left (\frac {3 a}{b}\right )+\sinh \left (\frac {3 a}{b}\right )\right )+12 \sqrt {b} \sqrt {a+b \text {arccosh}(c x)} (2 \text {arccosh}(c x) \cosh (3 \text {arccosh}(c x))-\sinh (3 \text {arccosh}(c x)))\right )}{288 c^3} \]
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\[\int x^{2} \left (a +b \,\operatorname {arccosh}\left (c x \right )\right )^{\frac {3}{2}}d x\]
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Exception generated. \[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=\text {Exception raised: TypeError} \]
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\[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=\int x^{2} \left (a + b \operatorname {acosh}{\left (c x \right )}\right )^{\frac {3}{2}}\, dx \]
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\[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=\int { {\left (b \operatorname {arcosh}\left (c x\right ) + a\right )}^{\frac {3}{2}} x^{2} \,d x } \]
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Exception generated. \[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=\text {Exception raised: RuntimeError} \]
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Timed out. \[ \int x^2 (a+b \text {arccosh}(c x))^{3/2} \, dx=\int x^2\,{\left (a+b\,\mathrm {acosh}\left (c\,x\right )\right )}^{3/2} \,d x \]
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