Optimal. Leaf size=8 \[ \frac {1}{4} \tan ^{-1}\left (x^4\right ) \]
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Rubi [A]
time = 0.00, antiderivative size = 8, normalized size of antiderivative = 1.00, number of steps
used = 2, number of rules used = 2, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {281, 209}
\begin {gather*} \frac {\text {ArcTan}\left (x^4\right )}{4} \end {gather*}
Antiderivative was successfully verified.
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Rule 209
Rule 281
Rubi steps
\begin {align*} \int \frac {x^3}{1+x^8} \, dx &=\frac {1}{4} \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,x^4\right )\\ &=\frac {1}{4} \tan ^{-1}\left (x^4\right )\\ \end {align*}
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Mathematica [A]
time = 0.00, size = 8, normalized size = 1.00 \begin {gather*} \frac {1}{4} \tan ^{-1}\left (x^4\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.17, size = 7, normalized size = 0.88
method | result | size |
default | \(\frac {\arctan \left (x^{4}\right )}{4}\) | \(7\) |
meijerg | \(\frac {\arctan \left (x^{4}\right )}{4}\) | \(7\) |
risch | \(\frac {\arctan \left (x^{4}\right )}{4}\) | \(7\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.49, size = 6, normalized size = 0.75 \begin {gather*} \frac {1}{4} \, \arctan \left (x^{4}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.36, size = 6, normalized size = 0.75 \begin {gather*} \frac {1}{4} \, \arctan \left (x^{4}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.03, size = 5, normalized size = 0.62 \begin {gather*} \frac {\operatorname {atan}{\left (x^{4} \right )}}{4} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.50, size = 6, normalized size = 0.75 \begin {gather*} \frac {1}{4} \, \arctan \left (x^{4}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.04, size = 6, normalized size = 0.75 \begin {gather*} \frac {\mathrm {atan}\left (x^4\right )}{4} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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