Optimal. Leaf size=157 \[ \frac{3 \sqrt{\frac{\pi }{2}} S\left (2 \sqrt{\frac{2}{\pi }} \sqrt{\cos ^{-1}(a x)}\right )}{512 a^4}+\frac{3 \sqrt{\pi } S\left (\frac{2 \sqrt{\cos ^{-1}(a x)}}{\sqrt{\pi }}\right )}{64 a^4}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2} \]
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Rubi [A] time = 0.367786, antiderivative size = 157, normalized size of antiderivative = 1., number of steps used = 16, number of rules used = 8, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.667, Rules used = {4630, 4708, 4642, 4636, 4406, 12, 3305, 3351} \[ \frac{3 \sqrt{\frac{\pi }{2}} S\left (2 \sqrt{\frac{2}{\pi }} \sqrt{\cos ^{-1}(a x)}\right )}{512 a^4}+\frac{3 \sqrt{\pi } S\left (\frac{2 \sqrt{\cos ^{-1}(a x)}}{\sqrt{\pi }}\right )}{64 a^4}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2} \]
Antiderivative was successfully verified.
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Rule 4630
Rule 4708
Rule 4642
Rule 4636
Rule 4406
Rule 12
Rule 3305
Rule 3351
Rubi steps
\begin{align*} \int x^3 \cos ^{-1}(a x)^{3/2} \, dx &=\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{1}{8} (3 a) \int \frac{x^4 \sqrt{\cos ^{-1}(a x)}}{\sqrt{1-a^2 x^2}} \, dx\\ &=-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}-\frac{3}{64} \int \frac{x^3}{\sqrt{\cos ^{-1}(a x)}} \, dx+\frac{9 \int \frac{x^2 \sqrt{\cos ^{-1}(a x)}}{\sqrt{1-a^2 x^2}} \, dx}{32 a}\\ &=-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{3 \operatorname{Subst}\left (\int \frac{\cos ^3(x) \sin (x)}{\sqrt{x}} \, dx,x,\cos ^{-1}(a x)\right )}{64 a^4}+\frac{9 \int \frac{\sqrt{\cos ^{-1}(a x)}}{\sqrt{1-a^2 x^2}} \, dx}{64 a^3}-\frac{9 \int \frac{x}{\sqrt{\cos ^{-1}(a x)}} \, dx}{128 a^2}\\ &=-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{3 \operatorname{Subst}\left (\int \left (\frac{\sin (2 x)}{4 \sqrt{x}}+\frac{\sin (4 x)}{8 \sqrt{x}}\right ) \, dx,x,\cos ^{-1}(a x)\right )}{64 a^4}+\frac{9 \operatorname{Subst}\left (\int \frac{\cos (x) \sin (x)}{\sqrt{x}} \, dx,x,\cos ^{-1}(a x)\right )}{128 a^4}\\ &=-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{3 \operatorname{Subst}\left (\int \frac{\sin (4 x)}{\sqrt{x}} \, dx,x,\cos ^{-1}(a x)\right )}{512 a^4}+\frac{3 \operatorname{Subst}\left (\int \frac{\sin (2 x)}{\sqrt{x}} \, dx,x,\cos ^{-1}(a x)\right )}{256 a^4}+\frac{9 \operatorname{Subst}\left (\int \frac{\sin (2 x)}{2 \sqrt{x}} \, dx,x,\cos ^{-1}(a x)\right )}{128 a^4}\\ &=-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{3 \operatorname{Subst}\left (\int \sin \left (4 x^2\right ) \, dx,x,\sqrt{\cos ^{-1}(a x)}\right )}{256 a^4}+\frac{3 \operatorname{Subst}\left (\int \sin \left (2 x^2\right ) \, dx,x,\sqrt{\cos ^{-1}(a x)}\right )}{128 a^4}+\frac{9 \operatorname{Subst}\left (\int \frac{\sin (2 x)}{\sqrt{x}} \, dx,x,\cos ^{-1}(a x)\right )}{256 a^4}\\ &=-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{3 \sqrt{\frac{\pi }{2}} S\left (2 \sqrt{\frac{2}{\pi }} \sqrt{\cos ^{-1}(a x)}\right )}{512 a^4}+\frac{3 \sqrt{\pi } S\left (\frac{2 \sqrt{\cos ^{-1}(a x)}}{\sqrt{\pi }}\right )}{256 a^4}+\frac{9 \operatorname{Subst}\left (\int \sin \left (2 x^2\right ) \, dx,x,\sqrt{\cos ^{-1}(a x)}\right )}{128 a^4}\\ &=-\frac{9 x \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{64 a^3}-\frac{3 x^3 \sqrt{1-a^2 x^2} \sqrt{\cos ^{-1}(a x)}}{32 a}-\frac{3 \cos ^{-1}(a x)^{3/2}}{32 a^4}+\frac{1}{4} x^4 \cos ^{-1}(a x)^{3/2}+\frac{3 \sqrt{\frac{\pi }{2}} S\left (2 \sqrt{\frac{2}{\pi }} \sqrt{\cos ^{-1}(a x)}\right )}{512 a^4}+\frac{3 \sqrt{\pi } S\left (\frac{2 \sqrt{\cos ^{-1}(a x)}}{\sqrt{\pi }}\right )}{64 a^4}\\ \end{align*}
Mathematica [C] time = 0.0724389, size = 128, normalized size = 0.82 \[ -\frac{8 \sqrt{2} \sqrt{-i \cos ^{-1}(a x)} \text{Gamma}\left (\frac{5}{2},-2 i \cos ^{-1}(a x)\right )+8 \sqrt{2} \sqrt{i \cos ^{-1}(a x)} \text{Gamma}\left (\frac{5}{2},2 i \cos ^{-1}(a x)\right )+\sqrt{-i \cos ^{-1}(a x)} \text{Gamma}\left (\frac{5}{2},-4 i \cos ^{-1}(a x)\right )+\sqrt{i \cos ^{-1}(a x)} \text{Gamma}\left (\frac{5}{2},4 i \cos ^{-1}(a x)\right )}{512 a^4 \sqrt{\cos ^{-1}(a x)}} \]
Warning: Unable to verify antiderivative.
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Maple [A] time = 0.089, size = 121, normalized size = 0.8 \begin{align*}{\frac{1}{1024\,{a}^{4}} \left ( 3\,\sqrt{2}\sqrt{\pi }\sqrt{\arccos \left ( ax \right ) }{\it FresnelS} \left ( 2\,{\frac{\sqrt{2}\sqrt{\arccos \left ( ax \right ) }}{\sqrt{\pi }}} \right ) +128\, \left ( \arccos \left ( ax \right ) \right ) ^{2}\cos \left ( 2\,\arccos \left ( ax \right ) \right ) +32\, \left ( \arccos \left ( ax \right ) \right ) ^{2}\cos \left ( 4\,\arccos \left ( ax \right ) \right ) +48\,\sqrt{\pi }\sqrt{\arccos \left ( ax \right ) }{\it FresnelS} \left ( 2\,{\frac{\sqrt{\arccos \left ( ax \right ) }}{\sqrt{\pi }}} \right ) -12\,\arccos \left ( ax \right ) \sin \left ( 4\,\arccos \left ( ax \right ) \right ) -96\,\arccos \left ( ax \right ) \sin \left ( 2\,\arccos \left ( ax \right ) \right ) \right ){\frac{1}{\sqrt{\arccos \left ( ax \right ) }}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: RuntimeError} \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 x^{3} \operatorname{acos}^{\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 [B] time = 1.32685, size = 363, normalized size = 2.31 \begin{align*} \frac{3 \, i \sqrt{\arccos \left (a x\right )} e^{\left (4 \, i \arccos \left (a x\right )\right )}}{512 \, a^{4}} + \frac{\arccos \left (a x\right )^{\frac{3}{2}} e^{\left (4 \, i \arccos \left (a x\right )\right )}}{64 \, a^{4}} + \frac{3 \, i \sqrt{\arccos \left (a x\right )} e^{\left (2 \, i \arccos \left (a x\right )\right )}}{64 \, a^{4}} + \frac{\arccos \left (a x\right )^{\frac{3}{2}} e^{\left (2 \, i \arccos \left (a x\right )\right )}}{16 \, a^{4}} - \frac{3 \, i \sqrt{\arccos \left (a x\right )} e^{\left (-2 \, i \arccos \left (a x\right )\right )}}{64 \, a^{4}} + \frac{\arccos \left (a x\right )^{\frac{3}{2}} e^{\left (-2 \, i \arccos \left (a x\right )\right )}}{16 \, a^{4}} - \frac{3 \, i \sqrt{\arccos \left (a x\right )} e^{\left (-4 \, i \arccos \left (a x\right )\right )}}{512 \, a^{4}} + \frac{\arccos \left (a x\right )^{\frac{3}{2}} e^{\left (-4 \, i \arccos \left (a x\right )\right )}}{64 \, a^{4}} - \frac{3 \, \sqrt{2} \sqrt{\pi } i \operatorname{erf}\left (\sqrt{2}{\left (i - 1\right )} \sqrt{\arccos \left (a x\right )}\right )}{2048 \, a^{4}{\left (i - 1\right )}} - \frac{3 \, \sqrt{\pi } i \operatorname{erf}\left ({\left (i - 1\right )} \sqrt{\arccos \left (a x\right )}\right )}{128 \, a^{4}{\left (i - 1\right )}} + \frac{3 \, \sqrt{2} \sqrt{\pi } \operatorname{erf}\left (-\sqrt{2}{\left (i + 1\right )} \sqrt{\arccos \left (a x\right )}\right )}{2048 \, a^{4}{\left (i - 1\right )}} + \frac{3 \, \sqrt{\pi } \operatorname{erf}\left (-{\left (i + 1\right )} \sqrt{\arccos \left (a x\right )}\right )}{128 \, a^{4}{\left (i - 1\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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