Optimal. Leaf size=46 \[ \frac {\tanh ^{-1}\left (\frac {\sqrt {7}-2 x}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {\tanh ^{-1}\left (\frac {2 x+\sqrt {7}}{\sqrt {3}}\right )}{\sqrt {3}} \]
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Rubi [A] time = 0.04, antiderivative size = 46, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 3, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {1161, 618, 206} \begin {gather*} \frac {\tanh ^{-1}\left (\frac {\sqrt {7}-2 x}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {\tanh ^{-1}\left (\frac {2 x+\sqrt {7}}{\sqrt {3}}\right )}{\sqrt {3}} \end {gather*}
Antiderivative was successfully verified.
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Rule 206
Rule 618
Rule 1161
Rubi steps
\begin {align*} \int \frac {1+x^2}{1-5 x^2+x^4} \, dx &=\frac {1}{2} \int \frac {1}{1-\sqrt {7} x+x^2} \, dx+\frac {1}{2} \int \frac {1}{1+\sqrt {7} x+x^2} \, dx\\ &=-\operatorname {Subst}\left (\int \frac {1}{3-x^2} \, dx,x,-\sqrt {7}+2 x\right )-\operatorname {Subst}\left (\int \frac {1}{3-x^2} \, dx,x,\sqrt {7}+2 x\right )\\ &=\frac {\tanh ^{-1}\left (\frac {\sqrt {7}-2 x}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {\tanh ^{-1}\left (\frac {\sqrt {7}+2 x}{\sqrt {3}}\right )}{\sqrt {3}}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 40, normalized size = 0.87 \begin {gather*} \frac {\log \left (-x^2+\sqrt {3} x+1\right )-\log \left (x^2+\sqrt {3} x-1\right )}{2 \sqrt {3}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {1+x^2}{1-5 x^2+x^4} \, dx \end {gather*}
Verification is not applicable to the result.
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fricas [A] time = 1.01, size = 39, normalized size = 0.85 \begin {gather*} \frac {1}{6} \, \sqrt {3} \log \left (\frac {x^{4} + x^{2} - 2 \, \sqrt {3} {\left (x^{3} - x\right )} + 1}{x^{4} - 5 \, x^{2} + 1}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.24, size = 39, normalized size = 0.85 \begin {gather*} \frac {1}{6} \, \sqrt {3} \log \left (\frac {{\left | 2 \, x - 2 \, \sqrt {3} - \frac {2}{x} \right |}}{{\left | 2 \, x + 2 \, \sqrt {3} - \frac {2}{x} \right |}}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.04, size = 82, normalized size = 1.78 \begin {gather*} -\frac {2 \sqrt {21}\, \left (-7+\sqrt {21}\right ) \arctanh \left (\frac {4 x}{2 \sqrt {7}-2 \sqrt {3}}\right )}{21 \left (2 \sqrt {7}-2 \sqrt {3}\right )}-\frac {2 \left (7+\sqrt {21}\right ) \sqrt {21}\, \arctanh \left (\frac {4 x}{2 \sqrt {7}+2 \sqrt {3}}\right )}{21 \left (2 \sqrt {7}+2 \sqrt {3}\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {x^{2} + 1}{x^{4} - 5 \, x^{2} + 1}\,{d x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 4.47, size = 18, normalized size = 0.39 \begin {gather*} -\frac {\sqrt {3}\,\mathrm {atanh}\left (\frac {\sqrt {3}\,x}{x^2-1}\right )}{3} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.12, size = 39, normalized size = 0.85 \begin {gather*} \frac {\sqrt {3} \log {\left (x^{2} - \sqrt {3} x - 1 \right )}}{6} - \frac {\sqrt {3} \log {\left (x^{2} + \sqrt {3} x - 1 \right )}}{6} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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