Optimal. Leaf size=188 \[ -\frac{\sqrt [4]{-1} \sqrt{1-\sqrt [4]{-2}} \tanh ^{-1}\left (\frac{x}{\sqrt{1-\sqrt [4]{-2}}}\right )}{4\ 2^{3/4}}+\frac{(-1)^{3/4} \sqrt{1+i \sqrt [4]{-2}} \tanh ^{-1}\left (\frac{x}{\sqrt{1+i \sqrt [4]{-2}}}\right )}{4\ 2^{3/4}}+\frac{\sqrt [4]{-1} \sqrt{1+\sqrt [4]{-2}} \tanh ^{-1}\left (\frac{x}{\sqrt{1+\sqrt [4]{-2}}}\right )}{4\ 2^{3/4}}-\frac{1}{8} i \left (\sqrt [4]{-2}+\sqrt{2}\right ) \sqrt{\frac{1+i}{2^{3/4}+(1+i)}} \tanh ^{-1}\left (\sqrt{\frac{1+i}{2^{3/4}+(1+i)}} x\right ) \]
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Rubi [A] time = 0.379113, antiderivative size = 188, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 5, integrand size = 17, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.294 \[ -\frac{\sqrt [4]{-1} \sqrt{1-\sqrt [4]{-2}} \tanh ^{-1}\left (\frac{x}{\sqrt{1-\sqrt [4]{-2}}}\right )}{4\ 2^{3/4}}+\frac{(-1)^{3/4} \sqrt{1+i \sqrt [4]{-2}} \tanh ^{-1}\left (\frac{x}{\sqrt{1+i \sqrt [4]{-2}}}\right )}{4\ 2^{3/4}}+\frac{\sqrt [4]{-1} \sqrt{1+\sqrt [4]{-2}} \tanh ^{-1}\left (\frac{x}{\sqrt{1+\sqrt [4]{-2}}}\right )}{4\ 2^{3/4}}-\frac{1}{8} i \left (\sqrt [4]{-2}+\sqrt{2}\right ) \sqrt{\frac{1+i}{2^{3/4}+(1+i)}} \tanh ^{-1}\left (\sqrt{\frac{1+i}{2^{3/4}+(1+i)}} x\right ) \]
Antiderivative was successfully verified.
[In] Int[x^2/(2 + (1 - x^2)^4),x]
[Out]
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Rubi in Sympy [A] time = 86.2258, size = 236, normalized size = 1.26 \[ - \frac{\left (\sqrt [4]{2} + \sqrt [4]{2} i + 2 i\right ) \operatorname{atanh}{\left (\frac{\sqrt{2} x}{\sqrt{- 2^{\frac{3}{4}} + 2 - 2^{\frac{3}{4}} i}} \right )}}{8 \sqrt{- 2^{\frac{3}{4}} + 2 - 2^{\frac{3}{4}} i}} - \frac{\left (\sqrt [4]{2} - 2 i - \sqrt [4]{2} i\right ) \operatorname{atanh}{\left (\frac{\sqrt{2} x}{\sqrt{- 2^{\frac{3}{4}} + 2 + 2^{\frac{3}{4}} i}} \right )}}{8 \sqrt{- 2^{\frac{3}{4}} + 2 + 2^{\frac{3}{4}} i}} + \frac{\left (\sqrt [4]{2} - \sqrt [4]{2} i + 2 i\right ) \operatorname{atanh}{\left (\frac{\sqrt{2} x}{\sqrt{2^{\frac{3}{4}} + 2 - 2^{\frac{3}{4}} i}} \right )}}{8 \sqrt{2^{\frac{3}{4}} + 2 - 2^{\frac{3}{4}} i}} + \frac{\left (\sqrt [4]{2} - 2 i + \sqrt [4]{2} i\right ) \operatorname{atanh}{\left (\frac{\sqrt{2} x}{\sqrt{2^{\frac{3}{4}} + 2 + 2^{\frac{3}{4}} i}} \right )}}{8 \sqrt{2^{\frac{3}{4}} + 2 + 2^{\frac{3}{4}} i}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] rubi_integrate(x**2/(2+(-x**2+1)**4),x)
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Mathematica [C] time = 0.0192255, size = 61, normalized size = 0.32 \[ \frac{1}{8} \text{RootSum}\left [\text{$\#$1}^8-4 \text{$\#$1}^6+6 \text{$\#$1}^4-4 \text{$\#$1}^2+3\&,\frac{\text{$\#$1} \log (x-\text{$\#$1})}{\text{$\#$1}^6-3 \text{$\#$1}^4+3 \text{$\#$1}^2-1}\&\right ] \]
Antiderivative was successfully verified.
[In] Integrate[x^2/(2 + (1 - x^2)^4),x]
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Maple [C] time = 0.009, size = 56, normalized size = 0.3 \[{\frac{1}{8}\sum _{{\it \_R}={\it RootOf} \left ({{\it \_Z}}^{8}-4\,{{\it \_Z}}^{6}+6\,{{\it \_Z}}^{4}-4\,{{\it \_Z}}^{2}+3 \right ) }{\frac{{{\it \_R}}^{2}\ln \left ( x-{\it \_R} \right ) }{{{\it \_R}}^{7}-3\,{{\it \_R}}^{5}+3\,{{\it \_R}}^{3}-{\it \_R}}}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] int(x^2/(2+(-x^2+1)^4),x)
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Maxima [F] time = 0., size = 0, normalized size = 0. \[ \int \frac{x^{2}}{{\left (x^{2} - 1\right )}^{4} + 2}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate(x^2/((x^2 - 1)^4 + 2),x, algorithm="maxima")
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Fricas [F(-2)] time = 0., size = 0, normalized size = 0. \[ \text{Exception raised: NotImplementedError} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate(x^2/((x^2 - 1)^4 + 2),x, algorithm="fricas")
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Sympy [A] time = 0.601099, size = 39, normalized size = 0.21 \[ \operatorname{RootSum}{\left (1073741824 t^{8} + 65536 t^{4} - 1024 t^{2} + 3, \left ( t \mapsto t \log{\left (67108864 t^{7} + 262144 t^{5} + 4096 t^{3} - 40 t + x \right )} \right )\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate(x**2/(2+(-x**2+1)**4),x)
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GIAC/XCAS [F] time = 0., size = 0, normalized size = 0. \[ \int \frac{x^{2}}{{\left (x^{2} - 1\right )}^{4} + 2}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
[In] integrate(x^2/((x^2 - 1)^4 + 2),x, algorithm="giac")
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