Optimal. Leaf size=31 \[ -\frac {\tanh ^{-1}\left (\frac {\sqrt {2} (1+x)}{\sqrt {2+4 x+3 x^2}}\right )}{\sqrt {2}} \]
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Rubi [A]
time = 0.01, antiderivative size = 31, normalized size of antiderivative = 1.00, number of steps
used = 2, number of rules used = 2, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.111, Rules used = {738, 212}
\begin {gather*} -\frac {\tanh ^{-1}\left (\frac {\sqrt {2} (x+1)}{\sqrt {3 x^2+4 x+2}}\right )}{\sqrt {2}} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 738
Rubi steps
\begin {align*} \int \frac {1}{x \sqrt {2+4 x+3 x^2}} \, dx &=-\left (2 \text {Subst}\left (\int \frac {1}{8-x^2} \, dx,x,\frac {4+4 x}{\sqrt {2+4 x+3 x^2}}\right )\right )\\ &=-\frac {\tanh ^{-1}\left (\frac {\sqrt {2} (1+x)}{\sqrt {2+4 x+3 x^2}}\right )}{\sqrt {2}}\\ \end {align*}
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Mathematica [A]
time = 0.07, size = 38, normalized size = 1.23 \begin {gather*} \sqrt {2} \tanh ^{-1}\left (\sqrt {\frac {3}{2}} x-\frac {\sqrt {2+4 x+3 x^2}}{\sqrt {2}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.90, size = 29, normalized size = 0.94
method | result | size |
default | \(-\frac {\sqrt {2}\, \arctanh \left (\frac {\left (4 x +4\right ) \sqrt {2}}{4 \sqrt {3 x^{2}+4 x +2}}\right )}{2}\) | \(29\) |
trager | \(-\frac {\RootOf \left (\textit {\_Z}^{2}-2\right ) \ln \left (\frac {\RootOf \left (\textit {\_Z}^{2}-2\right ) x +\RootOf \left (\textit {\_Z}^{2}-2\right )+\sqrt {3 x^{2}+4 x +2}}{x}\right )}{2}\) | \(41\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.49, size = 24, normalized size = 0.77 \begin {gather*} -\frac {1}{2} \, \sqrt {2} \operatorname {arsinh}\left (\frac {\sqrt {2} x}{{\left | x \right |}} + \frac {\sqrt {2}}{{\left | x \right |}}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 2.67, size = 40, normalized size = 1.29 \begin {gather*} \frac {1}{4} \, \sqrt {2} \log \left (\frac {2 \, \sqrt {2} \sqrt {3 \, x^{2} + 4 \, x + 2} {\left (x + 1\right )} - 5 \, x^{2} - 8 \, x - 4}{x^{2}}\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 {1}{x \sqrt {3 x^{2} + 4 x + 2}}\, 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. 60 vs.
\(2 (25) = 50\).
time = 0.83, size = 60, normalized size = 1.94 \begin {gather*} -\frac {1}{2} \, \sqrt {2} \log \left (-\sqrt {3} x + \sqrt {2} + \sqrt {3 \, x^{2} + 4 \, x + 2}\right ) + \frac {1}{2} \, \sqrt {2} \log \left ({\left | -\sqrt {3} x - \sqrt {2} + \sqrt {3 \, x^{2} + 4 \, x + 2} \right |}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.16, size = 27, normalized size = 0.87 \begin {gather*} -\frac {\sqrt {2}\,\ln \left (\frac {2\,x+\sqrt {6\,x^2+8\,x+4}+2}{x}\right )}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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