Optimal. Leaf size=19 \[ \frac{x}{2 \left (x^2+1\right )}+\frac{1}{2} \tan ^{-1}(x) \]
[Out]
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Rubi [A] time = 0.00722714, antiderivative size = 19, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 7, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.286 \[ \frac{x}{2 \left (x^2+1\right )}+\frac{1}{2} \tan ^{-1}(x) \]
Antiderivative was successfully verified.
[In] Int[(1 + x^2)^(-2),x]
[Out]
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Rubi in Sympy [A] time = 0.5522, size = 12, normalized size = 0.63 \[ \frac{x}{2 \left (x^{2} + 1\right )} + \frac{\operatorname{atan}{\left (x \right )}}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] rubi_integrate(1/(x**2+1)**2,x)
[Out]
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Mathematica [A] time = 0.0070905, size = 16, normalized size = 0.84 \[ \frac{1}{2} \left (\frac{x}{x^2+1}+\tan ^{-1}(x)\right ) \]
Antiderivative was successfully verified.
[In] Integrate[(1 + x^2)^(-2),x]
[Out]
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Maple [A] time = 0., size = 16, normalized size = 0.8 \[{\frac{x}{2\,{x}^{2}+2}}+{\frac{\arctan \left ( x \right ) }{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] int(1/(x^2+1)^2,x)
[Out]
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Maxima [A] time = 1.50214, size = 20, normalized size = 1.05 \[ \frac{x}{2 \,{\left (x^{2} + 1\right )}} + \frac{1}{2} \, \arctan \left (x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x^2 + 1)^(-2),x, algorithm="maxima")
[Out]
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Fricas [A] time = 0.226824, size = 26, normalized size = 1.37 \[ \frac{{\left (x^{2} + 1\right )} \arctan \left (x\right ) + x}{2 \,{\left (x^{2} + 1\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x^2 + 1)^(-2),x, algorithm="fricas")
[Out]
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Sympy [A] time = 0.105739, size = 12, normalized size = 0.63 \[ \frac{x}{2 x^{2} + 2} + \frac{\operatorname{atan}{\left (x \right )}}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate(1/(x**2+1)**2,x)
[Out]
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GIAC/XCAS [A] time = 0.202456, size = 20, normalized size = 1.05 \[ \frac{x}{2 \,{\left (x^{2} + 1\right )}} + \frac{1}{2} \, \arctan \left (x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate((x^2 + 1)^(-2),x, algorithm="giac")
[Out]