Optimal. Leaf size=21 \[ \tanh ^{-1}\left (\frac {1+x^2}{\sqrt {1+3 x^2+x^4}}\right ) \]
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Rubi [A]
time = 0.02, antiderivative size = 21, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {1265, 852, 212}
\begin {gather*} \tanh ^{-1}\left (\frac {x^2+1}{\sqrt {x^4+3 x^2+1}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 852
Rule 1265
Rubi steps
\begin {align*} \int \frac {-1+x^2}{x \sqrt {1+3 x^2+x^4}} \, dx &=\frac {1}{2} \text {Subst}\left (\int \frac {-1+x}{x \sqrt {1+3 x+x^2}} \, dx,x,x^2\right )\\ &=2 \text {Subst}\left (\int \frac {1}{4-x^2} \, dx,x,\frac {2 \left (1+x^2\right )}{\sqrt {1+3 x^2+x^4}}\right )\\ &=\tanh ^{-1}\left (\frac {1+x^2}{\sqrt {1+3 x^2+x^4}}\right )\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(52\) vs. \(2(21)=42\).
time = 0.09, size = 52, normalized size = 2.48 \begin {gather*} -\tanh ^{-1}\left (x^2-\sqrt {1+3 x^2+x^4}\right )-\frac {1}{2} \log \left (-3-2 x^2+2 \sqrt {1+3 x^2+x^4}\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(45\) vs.
\(2(19)=38\).
time = 0.10, size = 46, normalized size = 2.19
method | result | size |
trager | \(\ln \left (\frac {x^{2}+\sqrt {x^{4}+3 x^{2}+1}+1}{x}\right )\) | \(23\) |
default | \(\frac {\ln \left (x^{2}+\frac {3}{2}+\sqrt {x^{4}+3 x^{2}+1}\right )}{2}+\frac {\arctanh \left (\frac {3 x^{2}+2}{2 \sqrt {x^{4}+3 x^{2}+1}}\right )}{2}\) | \(46\) |
elliptic | \(\frac {\ln \left (x^{2}+\frac {3}{2}+\sqrt {x^{4}+3 x^{2}+1}\right )}{2}+\frac {\arctanh \left (\frac {3 x^{2}+2}{2 \sqrt {x^{4}+3 x^{2}+1}}\right )}{2}\) | \(46\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] Leaf count of result is larger than twice the leaf count of optimal. 52 vs.
\(2 (19) = 38\).
time = 1.85, size = 52, normalized size = 2.48 \begin {gather*} \frac {1}{2} \, \log \left (2 \, x^{2} + 2 \, \sqrt {x^{4} + 3 \, x^{2} + 1} + 3\right ) + \frac {1}{2} \, \log \left (\frac {2 \, \sqrt {x^{4} + 3 \, x^{2} + 1}}{x^{2}} + \frac {2}{x^{2}} + 3\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 59 vs.
\(2 (19) = 38\).
time = 1.18, size = 59, normalized size = 2.81 \begin {gather*} -\frac {1}{2} \, \log \left (4 \, x^{4} + 11 \, x^{2} - \sqrt {x^{4} + 3 \, x^{2} + 1} {\left (4 \, x^{2} + 5\right )} + 5\right ) + \frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 3 \, x^{2} + 1} + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {\left (x - 1\right ) \left (x + 1\right )}{x \sqrt {x^{4} + 3 x^{2} + 1}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 69 vs.
\(2 (19) = 38\).
time = 0.91, size = 69, normalized size = 3.29 \begin {gather*} -\frac {1}{2} \, \log \left (2 \, x^{2} - 2 \, \sqrt {x^{4} + 3 \, x^{2} + 1} + 3\right ) + \frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 3 \, x^{2} + 1} + 1\right ) - \frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 3 \, x^{2} + 1} - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.81, size = 49, normalized size = 2.33 \begin {gather*} \frac {\ln \left (\frac {1}{x^2}\right )}{2}+\frac {\ln \left (\sqrt {x^4+3\,x^2+1}+x^2+\frac {3}{2}\right )}{2}+\frac {\ln \left (\frac {2\,\sqrt {x^4+3\,x^2+1}}{3}+x^2+\frac {2}{3}\right )}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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