Optimal. Leaf size=111 \[ -\frac {4 x^2 \sqrt {1-a^2 x^2}}{15 a^3}-\frac {x^3 \sqrt {1-a^2 x^2}}{4 a^2}-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}-\frac {(64+45 a x) \sqrt {1-a^2 x^2}}{120 a^5}+\frac {3 \text {ArcSin}(a x)}{8 a^5} \]
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Rubi [A]
time = 0.07, antiderivative size = 111, normalized size of antiderivative = 1.00, number of steps
used = 6, number of rules used = 4, integrand size = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.400, Rules used = {6259, 847, 794,
222} \begin {gather*} \frac {3 \text {ArcSin}(a x)}{8 a^5}-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}-\frac {x^3 \sqrt {1-a^2 x^2}}{4 a^2}-\frac {(45 a x+64) \sqrt {1-a^2 x^2}}{120 a^5}-\frac {4 x^2 \sqrt {1-a^2 x^2}}{15 a^3} \end {gather*}
Antiderivative was successfully verified.
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Rule 222
Rule 794
Rule 847
Rule 6259
Rubi steps
\begin {align*} \int e^{\tanh ^{-1}(a x)} x^4 \, dx &=\int \frac {x^4 (1+a x)}{\sqrt {1-a^2 x^2}} \, dx\\ &=-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}-\frac {\int \frac {x^3 \left (-4 a-5 a^2 x\right )}{\sqrt {1-a^2 x^2}} \, dx}{5 a^2}\\ &=-\frac {x^3 \sqrt {1-a^2 x^2}}{4 a^2}-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}+\frac {\int \frac {x^2 \left (15 a^2+16 a^3 x\right )}{\sqrt {1-a^2 x^2}} \, dx}{20 a^4}\\ &=-\frac {4 x^2 \sqrt {1-a^2 x^2}}{15 a^3}-\frac {x^3 \sqrt {1-a^2 x^2}}{4 a^2}-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}-\frac {\int \frac {x \left (-32 a^3-45 a^4 x\right )}{\sqrt {1-a^2 x^2}} \, dx}{60 a^6}\\ &=-\frac {4 x^2 \sqrt {1-a^2 x^2}}{15 a^3}-\frac {x^3 \sqrt {1-a^2 x^2}}{4 a^2}-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}-\frac {(64+45 a x) \sqrt {1-a^2 x^2}}{120 a^5}+\frac {3 \int \frac {1}{\sqrt {1-a^2 x^2}} \, dx}{8 a^4}\\ &=-\frac {4 x^2 \sqrt {1-a^2 x^2}}{15 a^3}-\frac {x^3 \sqrt {1-a^2 x^2}}{4 a^2}-\frac {x^4 \sqrt {1-a^2 x^2}}{5 a}-\frac {(64+45 a x) \sqrt {1-a^2 x^2}}{120 a^5}+\frac {3 \sin ^{-1}(a x)}{8 a^5}\\ \end {align*}
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Mathematica [A]
time = 0.06, size = 60, normalized size = 0.54 \begin {gather*} \frac {-\sqrt {1-a^2 x^2} \left (64+45 a x+32 a^2 x^2+30 a^3 x^3+24 a^4 x^4\right )+45 \text {ArcSin}(a x)}{120 a^5} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.62, size = 142, normalized size = 1.28
method | result | size |
risch | \(\frac {\left (24 a^{4} x^{4}+30 a^{3} x^{3}+32 a^{2} x^{2}+45 a x +64\right ) \left (a^{2} x^{2}-1\right )}{120 a^{5} \sqrt {-a^{2} x^{2}+1}}+\frac {3 \arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-a^{2} x^{2}+1}}\right )}{8 a^{4} \sqrt {a^{2}}}\) | \(88\) |
meijerg | \(-\frac {-\frac {16 \sqrt {\pi }}{15}+\frac {\sqrt {\pi }\, \left (6 a^{4} x^{4}+8 a^{2} x^{2}+16\right ) \sqrt {-a^{2} x^{2}+1}}{15}}{2 a^{5} \sqrt {\pi }}+\frac {-\frac {\sqrt {\pi }\, x \left (-a^{2}\right )^{\frac {5}{2}} \left (10 a^{2} x^{2}+15\right ) \sqrt {-a^{2} x^{2}+1}}{20 a^{4}}+\frac {3 \sqrt {\pi }\, \left (-a^{2}\right )^{\frac {5}{2}} \arcsin \left (a x \right )}{4 a^{5}}}{2 a^{4} \sqrt {\pi }\, \sqrt {-a^{2}}}\) | \(124\) |
default | \(a \left (-\frac {x^{4} \sqrt {-a^{2} x^{2}+1}}{5 a^{2}}+\frac {-\frac {4 x^{2} \sqrt {-a^{2} x^{2}+1}}{15 a^{2}}-\frac {8 \sqrt {-a^{2} x^{2}+1}}{15 a^{4}}}{a^{2}}\right )-\frac {x^{3} \sqrt {-a^{2} x^{2}+1}}{4 a^{2}}+\frac {-\frac {3 x \sqrt {-a^{2} x^{2}+1}}{8 a^{2}}+\frac {3 \arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-a^{2} x^{2}+1}}\right )}{8 a^{2} \sqrt {a^{2}}}}{a^{2}}\) | \(142\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.46, size = 105, normalized size = 0.95 \begin {gather*} -\frac {\sqrt {-a^{2} x^{2} + 1} x^{4}}{5 \, a} - \frac {\sqrt {-a^{2} x^{2} + 1} x^{3}}{4 \, a^{2}} - \frac {4 \, \sqrt {-a^{2} x^{2} + 1} x^{2}}{15 \, a^{3}} - \frac {3 \, \sqrt {-a^{2} x^{2} + 1} x}{8 \, a^{4}} + \frac {3 \, \arcsin \left (a x\right )}{8 \, a^{5}} - \frac {8 \, \sqrt {-a^{2} x^{2} + 1}}{15 \, a^{5}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.45, size = 73, normalized size = 0.66 \begin {gather*} -\frac {{\left (24 \, a^{4} x^{4} + 30 \, a^{3} x^{3} + 32 \, a^{2} x^{2} + 45 \, a x + 64\right )} \sqrt {-a^{2} x^{2} + 1} + 90 \, \arctan \left (\frac {\sqrt {-a^{2} x^{2} + 1} - 1}{a x}\right )}{120 \, a^{5}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 3.42, size = 221, normalized size = 1.99 \begin {gather*} a \left (\begin {cases} - \frac {x^{4} \sqrt {- a^{2} x^{2} + 1}}{5 a^{2}} - \frac {4 x^{2} \sqrt {- a^{2} x^{2} + 1}}{15 a^{4}} - \frac {8 \sqrt {- a^{2} x^{2} + 1}}{15 a^{6}} & \text {for}\: a \neq 0 \\\frac {x^{6}}{6} & \text {otherwise} \end {cases}\right ) + \begin {cases} - \frac {i x^{5}}{4 \sqrt {a^{2} x^{2} - 1}} - \frac {i x^{3}}{8 a^{2} \sqrt {a^{2} x^{2} - 1}} + \frac {3 i x}{8 a^{4} \sqrt {a^{2} x^{2} - 1}} - \frac {3 i \operatorname {acosh}{\left (a x \right )}}{8 a^{5}} & \text {for}\: \left |{a^{2} x^{2}}\right | > 1 \\\frac {x^{5}}{4 \sqrt {- a^{2} x^{2} + 1}} + \frac {x^{3}}{8 a^{2} \sqrt {- a^{2} x^{2} + 1}} - \frac {3 x}{8 a^{4} \sqrt {- a^{2} x^{2} + 1}} + \frac {3 \operatorname {asin}{\left (a x \right )}}{8 a^{5}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [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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Mupad [B]
time = 0.08, size = 112, normalized size = 1.01 \begin {gather*} \frac {3\,\mathrm {asinh}\left (x\,\sqrt {-a^2}\right )}{8\,a^4\,\sqrt {-a^2}}+\frac {\sqrt {1-a^2\,x^2}\,\left (\frac {8}{15\,a^3\,\sqrt {-a^2}}+\frac {a\,x^4}{5\,\sqrt {-a^2}}-\frac {3\,x\,\sqrt {-a^2}}{8\,a^4}+\frac {4\,x^2}{15\,a\,\sqrt {-a^2}}+\frac {x^3\,{\left (-a^2\right )}^{3/2}}{4\,a^4}\right )}{\sqrt {-a^2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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