Optimal. Leaf size=13 \[ \frac{1}{2} \log \left (x^2+3\right )+\tan ^{-1}(x) \]
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Rubi [A] time = 0.0940804, antiderivative size = 13, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.125, Rules used = {6725, 203, 260} \[ \frac{1}{2} \log \left (x^2+3\right )+\tan ^{-1}(x) \]
Antiderivative was successfully verified.
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Rule 6725
Rule 203
Rule 260
Rubi steps
\begin{align*} \int \frac{3+x+x^2+x^3}{\left (1+x^2\right ) \left (3+x^2\right )} \, dx &=\int \left (\frac{1}{1+x^2}+\frac{x}{3+x^2}\right ) \, dx\\ &=\int \frac{1}{1+x^2} \, dx+\int \frac{x}{3+x^2} \, dx\\ &=\tan ^{-1}(x)+\frac{1}{2} \log \left (3+x^2\right )\\ \end{align*}
Mathematica [A] time = 0.0066322, size = 13, normalized size = 1. \[ \frac{1}{2} \log \left (x^2+3\right )+\tan ^{-1}(x) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.005, size = 12, normalized size = 0.9 \begin{align*} \arctan \left ( x \right ) +{\frac{\ln \left ({x}^{2}+3 \right ) }{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 2.28345, size = 15, normalized size = 1.15 \begin{align*} \arctan \left (x\right ) + \frac{1}{2} \, \log \left (x^{2} + 3\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.41621, size = 41, normalized size = 3.15 \begin{align*} \arctan \left (x\right ) + \frac{1}{2} \, \log \left (x^{2} + 3\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.105318, size = 10, normalized size = 0.77 \begin{align*} \frac{\log{\left (x^{2} + 3 \right )}}{2} + \operatorname{atan}{\left (x \right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.13548, size = 15, normalized size = 1.15 \begin{align*} \arctan \left (x\right ) + \frac{1}{2} \, \log \left (x^{2} + 3\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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