Optimal. Leaf size=193 \[ \frac{\sqrt{\pi } \text{Erf}\left (\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{3 \sqrt{3 \pi } \text{Erf}\left (\sqrt{3} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{5 \pi } \text{Erf}\left (\sqrt{5} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{\pi } \text{Erfi}\left (\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{3 \sqrt{3 \pi } \text{Erfi}\left (\sqrt{3} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{5 \pi } \text{Erfi}\left (\sqrt{5} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}-\frac{2 x^4 \sqrt{a x-1} \sqrt{a x+1}}{a \sqrt{\cosh ^{-1}(a x)}} \]
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Rubi [A] time = 0.184238, antiderivative size = 193, normalized size of antiderivative = 1., number of steps used = 17, number of rules used = 5, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.417, Rules used = {5666, 3307, 2180, 2204, 2205} \[ \frac{\sqrt{\pi } \text{Erf}\left (\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{3 \sqrt{3 \pi } \text{Erf}\left (\sqrt{3} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{5 \pi } \text{Erf}\left (\sqrt{5} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{\pi } \text{Erfi}\left (\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{3 \sqrt{3 \pi } \text{Erfi}\left (\sqrt{3} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{5 \pi } \text{Erfi}\left (\sqrt{5} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}-\frac{2 x^4 \sqrt{a x-1} \sqrt{a x+1}}{a \sqrt{\cosh ^{-1}(a x)}} \]
Antiderivative was successfully verified.
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Rule 5666
Rule 3307
Rule 2180
Rule 2204
Rule 2205
Rubi steps
\begin{align*} \int \frac{x^4}{\cosh ^{-1}(a x)^{3/2}} \, dx &=-\frac{2 x^4 \sqrt{-1+a x} \sqrt{1+a x}}{a \sqrt{\cosh ^{-1}(a x)}}-\frac{2 \operatorname{Subst}\left (\int \left (-\frac{\cosh (x)}{8 \sqrt{x}}-\frac{9 \cosh (3 x)}{16 \sqrt{x}}-\frac{5 \cosh (5 x)}{16 \sqrt{x}}\right ) \, dx,x,\cosh ^{-1}(a x)\right )}{a^5}\\ &=-\frac{2 x^4 \sqrt{-1+a x} \sqrt{1+a x}}{a \sqrt{\cosh ^{-1}(a x)}}+\frac{\operatorname{Subst}\left (\int \frac{\cosh (x)}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{4 a^5}+\frac{5 \operatorname{Subst}\left (\int \frac{\cosh (5 x)}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{8 a^5}+\frac{9 \operatorname{Subst}\left (\int \frac{\cosh (3 x)}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{8 a^5}\\ &=-\frac{2 x^4 \sqrt{-1+a x} \sqrt{1+a x}}{a \sqrt{\cosh ^{-1}(a x)}}+\frac{\operatorname{Subst}\left (\int \frac{e^{-x}}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{8 a^5}+\frac{\operatorname{Subst}\left (\int \frac{e^x}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{8 a^5}+\frac{5 \operatorname{Subst}\left (\int \frac{e^{-5 x}}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{16 a^5}+\frac{5 \operatorname{Subst}\left (\int \frac{e^{5 x}}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{16 a^5}+\frac{9 \operatorname{Subst}\left (\int \frac{e^{-3 x}}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{16 a^5}+\frac{9 \operatorname{Subst}\left (\int \frac{e^{3 x}}{\sqrt{x}} \, dx,x,\cosh ^{-1}(a x)\right )}{16 a^5}\\ &=-\frac{2 x^4 \sqrt{-1+a x} \sqrt{1+a x}}{a \sqrt{\cosh ^{-1}(a x)}}+\frac{\operatorname{Subst}\left (\int e^{-x^2} \, dx,x,\sqrt{\cosh ^{-1}(a x)}\right )}{4 a^5}+\frac{\operatorname{Subst}\left (\int e^{x^2} \, dx,x,\sqrt{\cosh ^{-1}(a x)}\right )}{4 a^5}+\frac{5 \operatorname{Subst}\left (\int e^{-5 x^2} \, dx,x,\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{5 \operatorname{Subst}\left (\int e^{5 x^2} \, dx,x,\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{9 \operatorname{Subst}\left (\int e^{-3 x^2} \, dx,x,\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{9 \operatorname{Subst}\left (\int e^{3 x^2} \, dx,x,\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}\\ &=-\frac{2 x^4 \sqrt{-1+a x} \sqrt{1+a x}}{a \sqrt{\cosh ^{-1}(a x)}}+\frac{\sqrt{\pi } \text{erf}\left (\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{3 \sqrt{3 \pi } \text{erf}\left (\sqrt{3} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{5 \pi } \text{erf}\left (\sqrt{5} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{\pi } \text{erfi}\left (\sqrt{\cosh ^{-1}(a x)}\right )}{8 a^5}+\frac{3 \sqrt{3 \pi } \text{erfi}\left (\sqrt{3} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}+\frac{\sqrt{5 \pi } \text{erfi}\left (\sqrt{5} \sqrt{\cosh ^{-1}(a x)}\right )}{16 a^5}\\ \end{align*}
Mathematica [A] time = 0.29186, size = 201, normalized size = 1.04 \[ -\frac{-\sqrt{5} \sqrt{-\cosh ^{-1}(a x)} \text{Gamma}\left (\frac{1}{2},-5 \cosh ^{-1}(a x)\right )-3 \sqrt{3} \sqrt{-\cosh ^{-1}(a x)} \text{Gamma}\left (\frac{1}{2},-3 \cosh ^{-1}(a x)\right )-2 \sqrt{-\cosh ^{-1}(a x)} \text{Gamma}\left (\frac{1}{2},-\cosh ^{-1}(a x)\right )+2 \sqrt{\cosh ^{-1}(a x)} \text{Gamma}\left (\frac{1}{2},\cosh ^{-1}(a x)\right )+3 \sqrt{3} \sqrt{\cosh ^{-1}(a x)} \text{Gamma}\left (\frac{1}{2},3 \cosh ^{-1}(a x)\right )+\sqrt{5} \sqrt{\cosh ^{-1}(a x)} \text{Gamma}\left (\frac{1}{2},5 \cosh ^{-1}(a x)\right )+4 \sqrt{\frac{a x-1}{a x+1}} (a x+1)+6 \sinh \left (3 \cosh ^{-1}(a x)\right )+2 \sinh \left (5 \cosh ^{-1}(a x)\right )}{16 a^5 \sqrt{\cosh ^{-1}(a x)}} \]
Warning: Unable to verify antiderivative.
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Maple [F] time = 0.183, size = 0, normalized size = 0. \begin{align*} \int{{x}^{4} \left ({\rm arccosh} \left (ax\right ) \right ) ^{-{\frac{3}{2}}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{x^{4}}{\operatorname{arcosh}\left (a x\right )^{\frac{3}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: UnboundLocalError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{x^{4}}{\operatorname{acosh}^{\frac{3}{2}}{\left (a x \right )}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \mathit{sage}_{0} x \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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