Optimal. Leaf size=76 \[ \frac {2 \sqrt {1-a^2 x^2}}{3 a \text {ArcCos}(a x)^{3/2}}+\frac {4 x}{3 \sqrt {\text {ArcCos}(a x)}}+\frac {4 \sqrt {2 \pi } S\left (\sqrt {\frac {2}{\pi }} \sqrt {\text {ArcCos}(a x)}\right )}{3 a} \]
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Rubi [A]
time = 0.06, antiderivative size = 76, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.625, Rules used = {4718, 4808,
4720, 3386, 3432} \begin {gather*} \frac {2 \sqrt {1-a^2 x^2}}{3 a \text {ArcCos}(a x)^{3/2}}+\frac {4 \sqrt {2 \pi } S\left (\sqrt {\frac {2}{\pi }} \sqrt {\text {ArcCos}(a x)}\right )}{3 a}+\frac {4 x}{3 \sqrt {\text {ArcCos}(a x)}} \end {gather*}
Antiderivative was successfully verified.
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Rule 3386
Rule 3432
Rule 4718
Rule 4720
Rule 4808
Rubi steps
\begin {align*} \int \frac {1}{\cos ^{-1}(a x)^{5/2}} \, dx &=\frac {2 \sqrt {1-a^2 x^2}}{3 a \cos ^{-1}(a x)^{3/2}}+\frac {1}{3} (2 a) \int \frac {x}{\sqrt {1-a^2 x^2} \cos ^{-1}(a x)^{3/2}} \, dx\\ &=\frac {2 \sqrt {1-a^2 x^2}}{3 a \cos ^{-1}(a x)^{3/2}}+\frac {4 x}{3 \sqrt {\cos ^{-1}(a x)}}-\frac {4}{3} \int \frac {1}{\sqrt {\cos ^{-1}(a x)}} \, dx\\ &=\frac {2 \sqrt {1-a^2 x^2}}{3 a \cos ^{-1}(a x)^{3/2}}+\frac {4 x}{3 \sqrt {\cos ^{-1}(a x)}}+\frac {4 \text {Subst}\left (\int \frac {\sin (x)}{\sqrt {x}} \, dx,x,\cos ^{-1}(a x)\right )}{3 a}\\ &=\frac {2 \sqrt {1-a^2 x^2}}{3 a \cos ^{-1}(a x)^{3/2}}+\frac {4 x}{3 \sqrt {\cos ^{-1}(a x)}}+\frac {8 \text {Subst}\left (\int \sin \left (x^2\right ) \, dx,x,\sqrt {\cos ^{-1}(a x)}\right )}{3 a}\\ &=\frac {2 \sqrt {1-a^2 x^2}}{3 a \cos ^{-1}(a x)^{3/2}}+\frac {4 x}{3 \sqrt {\cos ^{-1}(a x)}}+\frac {4 \sqrt {2 \pi } S\left (\sqrt {\frac {2}{\pi }} \sqrt {\cos ^{-1}(a x)}\right )}{3 a}\\ \end {align*}
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Mathematica [C] Result contains complex when optimal does not.
time = 0.16, size = 122, normalized size = 1.61 \begin {gather*} -\frac {2 \left (-\sqrt {1-a^2 x^2}-e^{-i \text {ArcCos}(a x)} \text {ArcCos}(a x)-e^{i \text {ArcCos}(a x)} \text {ArcCos}(a x)+\sqrt {-i \text {ArcCos}(a x)} \text {ArcCos}(a x) \text {Gamma}\left (\frac {1}{2},-i \text {ArcCos}(a x)\right )+\sqrt {i \text {ArcCos}(a x)} \text {ArcCos}(a x) \text {Gamma}\left (\frac {1}{2},i \text {ArcCos}(a x)\right )\right )}{3 a \text {ArcCos}(a x)^{3/2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.16, size = 83, normalized size = 1.09
method | result | size |
default | \(\frac {\sqrt {2}\, \left (4 \arccos \left (a x \right )^{2} \pi \,\mathrm {S}\left (\frac {\sqrt {2}\, \sqrt {\arccos \left (a x \right )}}{\sqrt {\pi }}\right )+2 \arccos \left (a x \right )^{\frac {3}{2}} \sqrt {2}\, \sqrt {\pi }\, a x +\sqrt {2}\, \sqrt {\arccos \left (a x \right )}\, \sqrt {\pi }\, \sqrt {-a^{2} x^{2}+1}\right )}{3 a \sqrt {\pi }\, \arccos \left (a x \right )^{2}}\) | \(83\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: RuntimeError} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: TypeError} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {1}{\operatorname {acos}^{\frac {5}{2}}{\left (a x \right )}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int \frac {1}{{\mathrm {acos}\left (a\,x\right )}^{5/2}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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