Optimal. Leaf size=62 \[ \frac{1}{4} x^4 \left (a+b \text{csch}^{-1}(c x)\right )+\frac{b x^3 \sqrt{\frac{1}{c^2 x^2}+1}}{12 c}-\frac{b x \sqrt{\frac{1}{c^2 x^2}+1}}{6 c^3} \]
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Rubi [A] time = 0.0274502, antiderivative size = 62, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {6284, 271, 191} \[ \frac{1}{4} x^4 \left (a+b \text{csch}^{-1}(c x)\right )+\frac{b x^3 \sqrt{\frac{1}{c^2 x^2}+1}}{12 c}-\frac{b x \sqrt{\frac{1}{c^2 x^2}+1}}{6 c^3} \]
Antiderivative was successfully verified.
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Rule 6284
Rule 271
Rule 191
Rubi steps
\begin{align*} \int x^3 \left (a+b \text{csch}^{-1}(c x)\right ) \, dx &=\frac{1}{4} x^4 \left (a+b \text{csch}^{-1}(c x)\right )+\frac{b \int \frac{x^2}{\sqrt{1+\frac{1}{c^2 x^2}}} \, dx}{4 c}\\ &=\frac{b \sqrt{1+\frac{1}{c^2 x^2}} x^3}{12 c}+\frac{1}{4} x^4 \left (a+b \text{csch}^{-1}(c x)\right )-\frac{b \int \frac{1}{\sqrt{1+\frac{1}{c^2 x^2}}} \, dx}{6 c^3}\\ &=-\frac{b \sqrt{1+\frac{1}{c^2 x^2}} x}{6 c^3}+\frac{b \sqrt{1+\frac{1}{c^2 x^2}} x^3}{12 c}+\frac{1}{4} x^4 \left (a+b \text{csch}^{-1}(c x)\right )\\ \end{align*}
Mathematica [A] time = 0.094009, size = 62, normalized size = 1. \[ \frac{a x^4}{4}+b \sqrt{\frac{c^2 x^2+1}{c^2 x^2}} \left (\frac{x^3}{12 c}-\frac{x}{6 c^3}\right )+\frac{1}{4} b x^4 \text{csch}^{-1}(c x) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.194, size = 74, normalized size = 1.2 \begin{align*}{\frac{1}{{c}^{4}} \left ({\frac{{c}^{4}{x}^{4}a}{4}}+b \left ({\frac{{c}^{4}{x}^{4}{\rm arccsch} \left (cx\right )}{4}}+{\frac{ \left ({c}^{2}{x}^{2}+1 \right ) \left ({c}^{2}{x}^{2}-2 \right ) }{12\,cx}{\frac{1}{\sqrt{{\frac{{c}^{2}{x}^{2}+1}{{c}^{2}{x}^{2}}}}}}} \right ) \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.01002, size = 77, normalized size = 1.24 \begin{align*} \frac{1}{4} \, a x^{4} + \frac{1}{12} \,{\left (3 \, x^{4} \operatorname{arcsch}\left (c x\right ) + \frac{c^{2} x^{3}{\left (\frac{1}{c^{2} x^{2}} + 1\right )}^{\frac{3}{2}} - 3 \, x \sqrt{\frac{1}{c^{2} x^{2}} + 1}}{c^{3}}\right )} b \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.26618, size = 190, normalized size = 3.06 \begin{align*} \frac{3 \, b c^{3} x^{4} \log \left (\frac{c x \sqrt{\frac{c^{2} x^{2} + 1}{c^{2} x^{2}}} + 1}{c x}\right ) + 3 \, a c^{3} x^{4} +{\left (b c^{2} x^{3} - 2 \, b x\right )} \sqrt{\frac{c^{2} x^{2} + 1}{c^{2} x^{2}}}}{12 \, c^{3}} \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 x^{3} \left (a + b \operatorname{acsch}{\left (c x \right )}\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*} \int{\left (b \operatorname{arcsch}\left (c x\right ) + a\right )} x^{3}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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