Optimal. Leaf size=20 \[ \frac{1}{2} \log \left (x^2+2 x+2\right )-2 \tan ^{-1}(x+1) \]
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Rubi [A] time = 0.0090319, antiderivative size = 20, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.286, Rules used = {634, 617, 204, 628} \[ \frac{1}{2} \log \left (x^2+2 x+2\right )-2 \tan ^{-1}(x+1) \]
Antiderivative was successfully verified.
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Rule 634
Rule 617
Rule 204
Rule 628
Rubi steps
\begin{align*} \int \frac{-1+x}{2+2 x+x^2} \, dx &=\frac{1}{2} \int \frac{2+2 x}{2+2 x+x^2} \, dx-2 \int \frac{1}{2+2 x+x^2} \, dx\\ &=\frac{1}{2} \log \left (2+2 x+x^2\right )+2 \operatorname{Subst}\left (\int \frac{1}{-1-x^2} \, dx,x,1+x\right )\\ &=-2 \tan ^{-1}(1+x)+\frac{1}{2} \log \left (2+2 x+x^2\right )\\ \end{align*}
Mathematica [A] time = 0.005253, size = 20, normalized size = 1. \[ \frac{1}{2} \log \left (x^2+2 x+2\right )-2 \tan ^{-1}(x+1) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.001, size = 19, normalized size = 1. \begin{align*} -2\,\arctan \left ( 1+x \right ) +{\frac{\ln \left ({x}^{2}+2\,x+2 \right ) }{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.4061, size = 24, normalized size = 1.2 \begin{align*} -2 \, \arctan \left (x + 1\right ) + \frac{1}{2} \, \log \left (x^{2} + 2 \, x + 2\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.73515, size = 58, normalized size = 2.9 \begin{align*} -2 \, \arctan \left (x + 1\right ) + \frac{1}{2} \, \log \left (x^{2} + 2 \, x + 2\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.0911, size = 17, normalized size = 0.85 \begin{align*} \frac{\log{\left (x^{2} + 2 x + 2 \right )}}{2} - 2 \operatorname{atan}{\left (x + 1 \right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.06146, size = 24, normalized size = 1.2 \begin{align*} -2 \, \arctan \left (x + 1\right ) + \frac{1}{2} \, \log \left (x^{2} + 2 \, x + 2\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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