Optimal. Leaf size=62 \[ -\frac {\tanh ^{-1}\left (\frac {5+2 x}{\sqrt {7} \sqrt {4+2 x+x^2}}\right )}{2 \sqrt {7}}-\frac {\tanh ^{-1}\left (\frac {\sqrt {4+2 x+x^2}}{\sqrt {3}}\right )}{2 \sqrt {3}} \]
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Rubi [A]
time = 0.02, antiderivative size = 62, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.238, Rules used = {1047, 738, 212,
702, 213} \begin {gather*} -\frac {\tanh ^{-1}\left (\frac {2 x+5}{\sqrt {7} \sqrt {x^2+2 x+4}}\right )}{2 \sqrt {7}}-\frac {\tanh ^{-1}\left (\frac {\sqrt {x^2+2 x+4}}{\sqrt {3}}\right )}{2 \sqrt {3}} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 213
Rule 702
Rule 738
Rule 1047
Rubi steps
\begin {align*} \int \frac {x}{\left (-1+x^2\right ) \sqrt {4+2 x+x^2}} \, dx &=\frac {1}{2} \int \frac {1}{(-1+x) \sqrt {4+2 x+x^2}} \, dx+\frac {1}{2} \int \frac {1}{(1+x) \sqrt {4+2 x+x^2}} \, dx\\ &=2 \text {Subst}\left (\int \frac {1}{-12+4 x^2} \, dx,x,\sqrt {4+2 x+x^2}\right )-\text {Subst}\left (\int \frac {1}{28-x^2} \, dx,x,\frac {10+4 x}{\sqrt {4+2 x+x^2}}\right )\\ &=-\frac {\tanh ^{-1}\left (\frac {10+4 x}{2 \sqrt {7} \sqrt {4+2 x+x^2}}\right )}{2 \sqrt {7}}-\frac {\tanh ^{-1}\left (\frac {\sqrt {4+2 x+x^2}}{\sqrt {3}}\right )}{2 \sqrt {3}}\\ \end {align*}
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Mathematica [A]
time = 0.14, size = 62, normalized size = 1.00 \begin {gather*} \frac {\tanh ^{-1}\left (\frac {1+x-\sqrt {4+2 x+x^2}}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {\tanh ^{-1}\left (\frac {1-x+\sqrt {4+2 x+x^2}}{\sqrt {7}}\right )}{\sqrt {7}} \end {gather*}
Antiderivative was successfully verified.
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Mathics [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {cought exception: maximum recursion depth exceeded} \end {gather*}
Warning: Unable to verify antiderivative.
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Maple [A]
time = 0.19, size = 49, normalized size = 0.79
method | result | size |
default | \(-\frac {\sqrt {7}\, \arctanh \left (\frac {\left (10+4 x \right ) \sqrt {7}}{14 \sqrt {\left (-1+x \right )^{2}+3+4 x}}\right )}{14}-\frac {\sqrt {3}\, \arctanh \left (\frac {\sqrt {3}}{\sqrt {\left (1+x \right )^{2}+3}}\right )}{6}\) | \(49\) |
trager | \(-\frac {\RootOf \left (\textit {\_Z}^{2}-3\right ) \ln \left (\frac {\sqrt {x^{2}+2 x +4}+\RootOf \left (\textit {\_Z}^{2}-3\right )}{1+x}\right )}{6}+\frac {\RootOf \left (\textit {\_Z}^{2}-7\right ) \ln \left (-\frac {-2 \RootOf \left (\textit {\_Z}^{2}-7\right ) x +7 \sqrt {x^{2}+2 x +4}-5 \RootOf \left (\textit {\_Z}^{2}-7\right )}{-1+x}\right )}{14}\) | \(80\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.36, size = 54, normalized size = 0.87 \begin {gather*} -\frac {1}{14} \, \sqrt {7} \operatorname {arsinh}\left (\frac {4 \, \sqrt {3} x}{3 \, {\left | 2 \, x - 2 \right |}} + \frac {10 \, \sqrt {3}}{3 \, {\left | 2 \, x - 2 \right |}}\right ) - \frac {1}{6} \, \sqrt {3} \operatorname {arsinh}\left (\frac {2 \, \sqrt {3}}{{\left | 2 \, x + 2 \right |}}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.36, size = 74, normalized size = 1.19 \begin {gather*} \frac {1}{14} \, \sqrt {7} \log \left (\frac {\sqrt {7} {\left (2 \, x + 5\right )} + \sqrt {x^{2} + 2 \, x + 4} {\left (2 \, \sqrt {7} - 7\right )} - 4 \, x - 10}{x - 1}\right ) + \frac {1}{6} \, \sqrt {3} \log \left (-\frac {\sqrt {3} - \sqrt {x^{2} + 2 \, x + 4}}{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 {x}{\left (x - 1\right ) \left (x + 1\right ) \sqrt {x^{2} + 2 x + 4}}\, 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. 109 vs.
\(2 (48) = 96\).
time = 0.01, size = 136, normalized size = 2.19 \begin {gather*} 2 \left (\frac {\ln \left (\frac {\left |2 \left (\sqrt {x^{2}+2 x+4}-x\right )-2-2 \sqrt {3}\right |}{2 \left (\sqrt {x^{2}+2 x+4}-x\right )-2+2 \sqrt {3}}\right )}{4 \sqrt {3}}+\frac {\ln \left (\frac {\left |2 \left (\sqrt {x^{2}+2 x+4}-x\right )+2-2 \sqrt {7}\right |}{\left |2 \left (\sqrt {x^{2}+2 x+4}-x\right )+2+2 \sqrt {7}\right |}\right )}{4 \sqrt {7}}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.02 \begin {gather*} \int \frac {x}{\left (x^2-1\right )\,\sqrt {x^2+2\,x+4}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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