Optimal. Leaf size=22 \[ \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {1+\frac {1}{x}}}{\sqrt {2}}\right ) \]
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Rubi [A]
time = 0.02, antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 19, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.263, Rules used = {1460, 1483,
641, 65, 213} \begin {gather*} \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {\frac {1}{x}+1}}{\sqrt {2}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 65
Rule 213
Rule 641
Rule 1460
Rule 1483
Rubi steps
\begin {align*} \int \frac {\sqrt {1+\frac {1}{x}}}{1-x^2} \, dx &=\int \frac {\sqrt {1+\frac {1}{x}}}{\left (-1+\frac {1}{x^2}\right ) x^2} \, dx\\ &=-\text {Subst}\left (\int \frac {\sqrt {1+x}}{-1+x^2} \, dx,x,\frac {1}{x}\right )\\ &=-\text {Subst}\left (\int \frac {1}{(-1+x) \sqrt {1+x}} \, dx,x,\frac {1}{x}\right )\\ &=-\left (2 \text {Subst}\left (\int \frac {1}{-2+x^2} \, dx,x,\sqrt {1+\frac {1}{x}}\right )\right )\\ &=\sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {1+\frac {1}{x}}}{\sqrt {2}}\right )\\ \end {align*}
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Mathematica [A]
time = 0.04, size = 24, normalized size = 1.09 \begin {gather*} \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {\frac {1+x}{x}}}{\sqrt {2}}\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. \(40\) vs.
\(2(17)=34\).
time = 0.23, size = 41, normalized size = 1.86
method | result | size |
default | \(\frac {\sqrt {\frac {1+x}{x}}\, x \sqrt {2}\, \arctanh \left (\frac {\left (1+3 x \right ) \sqrt {2}}{4 \sqrt {x^{2}+x}}\right )}{2 \sqrt {x \left (1+x \right )}}\) | \(41\) |
trager | \(-\frac {\RootOf \left (\textit {\_Z}^{2}-2\right ) \ln \left (\frac {4 \sqrt {-\frac {-1-x}{x}}\, x -3 \RootOf \left (\textit {\_Z}^{2}-2\right ) x -\RootOf \left (\textit {\_Z}^{2}-2\right )}{-1+x}\right )}{2}\) | \(49\) |
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*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.33, size = 33, normalized size = 1.50 \begin {gather*} \frac {1}{2} \, \sqrt {2} \log \left (-\frac {2 \, \sqrt {2} x \sqrt {\frac {x + 1}{x}} + 3 \, x + 1}{x - 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 {\sqrt {1 + \frac {1}{x}}}{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. 73 vs.
\(2 (17) = 34\).
time = 4.63, size = 73, normalized size = 3.32 \begin {gather*} \frac {1}{2} \, \sqrt {2} \log \left (\frac {\sqrt {2} - 1}{\sqrt {2} + 1}\right ) \mathrm {sgn}\left (x\right ) - \frac {1}{2} \, \sqrt {2} \log \left (\frac {{\left | -2 \, x - 2 \, \sqrt {2} + 2 \, \sqrt {x^{2} + x} + 2 \right |}}{{\left | -2 \, x + 2 \, \sqrt {2} + 2 \, \sqrt {x^{2} + x} + 2 \right |}}\right ) \mathrm {sgn}\left (x\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 3.58, size = 17, normalized size = 0.77 \begin {gather*} \sqrt {2}\,\mathrm {atanh}\left (\frac {\sqrt {2}\,\sqrt {\frac {1}{x}+1}}{2}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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