Optimal. Leaf size=36 \[ -\frac{1}{2} \log \left (x^2+1\right )+\log \left (x^2+2\right )+6 \tan ^{-1}(x)-5 \sqrt{2} \tan ^{-1}\left (\frac{x}{\sqrt{2}}\right ) \]
[Out]
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Rubi [A] time = 0.196964, antiderivative size = 36, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 4, integrand size = 25, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.16 \[ -\frac{1}{2} \log \left (x^2+1\right )+\log \left (x^2+2\right )+6 \tan ^{-1}(x)-5 \sqrt{2} \tan ^{-1}\left (\frac{x}{\sqrt{2}}\right ) \]
Antiderivative was successfully verified.
[In] Int[(2 - 4*x^2 + x^3)/((1 + x^2)*(2 + x^2)),x]
[Out]
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Rubi in Sympy [A] time = 14.5789, size = 36, normalized size = 1. \[ - \frac{\log{\left (x^{2} + 1 \right )}}{2} + \log{\left (x^{2} + 2 \right )} + 6 \operatorname{atan}{\left (x \right )} - 5 \sqrt{2} \operatorname{atan}{\left (\frac{\sqrt{2} x}{2} \right )} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] rubi_integrate((x**3-4*x**2+2)/(x**2+1)/(x**2+2),x)
[Out]
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Mathematica [A] time = 0.0264357, size = 36, normalized size = 1. \[ -\frac{1}{2} \log \left (x^2+1\right )+\log \left (x^2+2\right )+6 \tan ^{-1}(x)-5 \sqrt{2} \tan ^{-1}\left (\frac{x}{\sqrt{2}}\right ) \]
Antiderivative was successfully verified.
[In] Integrate[(2 - 4*x^2 + x^3)/((1 + x^2)*(2 + x^2)),x]
[Out]
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Maple [A] time = 0.007, size = 32, normalized size = 0.9 \[ 6\,\arctan \left ( x \right ) -{\frac{\ln \left ({x}^{2}+1 \right ) }{2}}+\ln \left ({x}^{2}+2 \right ) -5\,\arctan \left ( 1/2\,x\sqrt{2} \right ) \sqrt{2} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] int((x^3-4*x^2+2)/(x^2+1)/(x^2+2),x)
[Out]
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Maxima [A] time = 1.54831, size = 42, normalized size = 1.17 \[ -5 \, \sqrt{2} \arctan \left (\frac{1}{2} \, \sqrt{2} x\right ) + 6 \, \arctan \left (x\right ) + \log \left (x^{2} + 2\right ) - \frac{1}{2} \, \log \left (x^{2} + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x^3 - 4*x^2 + 2)/((x^2 + 2)*(x^2 + 1)),x, algorithm="maxima")
[Out]
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Fricas [A] time = 0.211656, size = 42, normalized size = 1.17 \[ -5 \, \sqrt{2} \arctan \left (\frac{1}{2} \, \sqrt{2} x\right ) + 6 \, \arctan \left (x\right ) + \log \left (x^{2} + 2\right ) - \frac{1}{2} \, \log \left (x^{2} + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x^3 - 4*x^2 + 2)/((x^2 + 2)*(x^2 + 1)),x, algorithm="fricas")
[Out]
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Sympy [A] time = 0.275928, size = 36, normalized size = 1. \[ - \frac{\log{\left (x^{2} + 1 \right )}}{2} + \log{\left (x^{2} + 2 \right )} + 6 \operatorname{atan}{\left (x \right )} - 5 \sqrt{2} \operatorname{atan}{\left (\frac{\sqrt{2} x}{2} \right )} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x**3-4*x**2+2)/(x**2+1)/(x**2+2),x)
[Out]
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GIAC/XCAS [A] time = 0.220002, size = 42, normalized size = 1.17 \[ -5 \, \sqrt{2} \arctan \left (\frac{1}{2} \, \sqrt{2} x\right ) + 6 \, \arctan \left (x\right ) +{\rm ln}\left (x^{2} + 2\right ) - \frac{1}{2} \,{\rm ln}\left (x^{2} + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x^3 - 4*x^2 + 2)/((x^2 + 2)*(x^2 + 1)),x, algorithm="giac")
[Out]