Optimal. Leaf size=97 \[ -\frac {1}{2 (a-b) x^2}-\frac {\sqrt {a} (a+b) \tanh ^{-1}\left (\frac {\sqrt {a} \left (1+x^2\right )}{\sqrt {b}}\right )}{2 (a-b)^2 \sqrt {b}}-\frac {2 a \log (x)}{(a-b)^2}+\frac {a \log \left (a-b+2 a x^2+a x^4\right )}{2 (a-b)^2} \]
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Rubi [A]
time = 0.12, antiderivative size = 97, normalized size of antiderivative = 1.00, number of steps
used = 8, number of rules used = 7, integrand size = 22, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.318, Rules used = {1128, 723, 814,
648, 632, 212, 642} \begin {gather*} -\frac {1}{2 x^2 (a-b)}-\frac {\sqrt {a} (a+b) \tanh ^{-1}\left (\frac {\sqrt {a} \left (x^2+1\right )}{\sqrt {b}}\right )}{2 \sqrt {b} (a-b)^2}+\frac {a \log \left (a x^4+2 a x^2+a-b\right )}{2 (a-b)^2}-\frac {2 a \log (x)}{(a-b)^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 632
Rule 642
Rule 648
Rule 723
Rule 814
Rule 1128
Rubi steps
\begin {align*} \int \frac {1}{x^3 \left (a-b+2 a x^2+a x^4\right )} \, dx &=\frac {1}{2} \text {Subst}\left (\int \frac {1}{x^2 \left (a-b+2 a x+a x^2\right )} \, dx,x,x^2\right )\\ &=-\frac {1}{2 (a-b) x^2}+\frac {\text {Subst}\left (\int \frac {-2 a-a x}{x \left (a-b+2 a x+a x^2\right )} \, dx,x,x^2\right )}{2 (a-b)}\\ &=-\frac {1}{2 (a-b) x^2}+\frac {\text {Subst}\left (\int \left (-\frac {2 a}{(a-b) x}+\frac {a (3 a+b+2 a x)}{(a-b) \left (a-b+2 a x+a x^2\right )}\right ) \, dx,x,x^2\right )}{2 (a-b)}\\ &=-\frac {1}{2 (a-b) x^2}-\frac {2 a \log (x)}{(a-b)^2}+\frac {a \text {Subst}\left (\int \frac {3 a+b+2 a x}{a-b+2 a x+a x^2} \, dx,x,x^2\right )}{2 (a-b)^2}\\ &=-\frac {1}{2 (a-b) x^2}-\frac {2 a \log (x)}{(a-b)^2}+\frac {a \text {Subst}\left (\int \frac {2 a+2 a x}{a-b+2 a x+a x^2} \, dx,x,x^2\right )}{2 (a-b)^2}+\frac {(a (a+b)) \text {Subst}\left (\int \frac {1}{a-b+2 a x+a x^2} \, dx,x,x^2\right )}{2 (a-b)^2}\\ &=-\frac {1}{2 (a-b) x^2}-\frac {2 a \log (x)}{(a-b)^2}+\frac {a \log \left (a-b+2 a x^2+a x^4\right )}{2 (a-b)^2}-\frac {(a (a+b)) \text {Subst}\left (\int \frac {1}{4 a b-x^2} \, dx,x,2 a \left (1+x^2\right )\right )}{(a-b)^2}\\ &=-\frac {1}{2 (a-b) x^2}-\frac {\sqrt {a} (a+b) \tanh ^{-1}\left (\frac {\sqrt {a} \left (1+x^2\right )}{\sqrt {b}}\right )}{2 (a-b)^2 \sqrt {b}}-\frac {2 a \log (x)}{(a-b)^2}+\frac {a \log \left (a-b+2 a x^2+a x^4\right )}{2 (a-b)^2}\\ \end {align*}
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Mathematica [A]
time = 0.06, size = 146, normalized size = 1.51 \begin {gather*} \frac {-8 a \sqrt {b} x^2 \log (x)+\sqrt {a} \left (\sqrt {a}+\sqrt {b}\right )^2 x^2 \log \left (-\sqrt {b}+\sqrt {a} \left (1+x^2\right )\right )-\left (\sqrt {a}-\sqrt {b}\right ) \left (2 \left (\sqrt {a} \sqrt {b}+b\right )+\left (a x^2-\sqrt {a} \sqrt {b} x^2\right ) \log \left (\sqrt {b}+\sqrt {a} \left (1+x^2\right )\right )\right )}{4 (a-b)^2 \sqrt {b} x^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.04, size = 82, normalized size = 0.85
method | result | size |
default | \(\frac {a \left (\ln \left (a \,x^{4}+2 a \,x^{2}+a -b \right )-\frac {\left (a +b \right ) \arctanh \left (\frac {2 a \,x^{2}+2 a}{2 \sqrt {a b}}\right )}{\sqrt {a b}}\right )}{2 \left (a -b \right )^{2}}-\frac {1}{2 \left (a -b \right ) x^{2}}-\frac {2 a \ln \left (x \right )}{\left (a -b \right )^{2}}\) | \(82\) |
risch | \(-\frac {1}{2 \left (a -b \right ) x^{2}}-\frac {2 a \ln \left (x \right )}{a^{2}-2 a b +b^{2}}+\frac {\left (\munderset {\textit {\_R} =\RootOf \left (\left (a^{2} b -2 a \,b^{2}+b^{3}\right ) \textit {\_Z}^{2}-4 a b \textit {\_Z} -a \right )}{\sum }\textit {\_R} \ln \left (\left (\left (-a^{3}-3 a^{2} b +9 a \,b^{2}-5 b^{3}\right ) \textit {\_R}^{2}+\left (-8 a^{2}+8 a b \right ) \textit {\_R} +4 a \right ) x^{2}+\left (-a^{3}+3 a^{2} b -3 a \,b^{2}+b^{3}\right ) \textit {\_R}^{2}+\left (-7 a^{2}+6 a b +b^{2}\right ) \textit {\_R} +8 a \right )\right )}{4}\) | \(160\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.52, size = 123, normalized size = 1.27 \begin {gather*} \frac {a \log \left (a x^{4} + 2 \, a x^{2} + a - b\right )}{2 \, {\left (a^{2} - 2 \, a b + b^{2}\right )}} - \frac {a \log \left (x^{2}\right )}{a^{2} - 2 \, a b + b^{2}} + \frac {{\left (a^{2} + a b\right )} \log \left (\frac {a x^{2} + a - \sqrt {a b}}{a x^{2} + a + \sqrt {a b}}\right )}{4 \, {\left (a^{2} - 2 \, a b + b^{2}\right )} \sqrt {a b}} - \frac {1}{2 \, {\left (a - b\right )} x^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.37, size = 209, normalized size = 2.15 \begin {gather*} \left [\frac {{\left (a + b\right )} x^{2} \sqrt {\frac {a}{b}} \log \left (\frac {a x^{4} + 2 \, a x^{2} - 2 \, {\left (b x^{2} + b\right )} \sqrt {\frac {a}{b}} + a + b}{a x^{4} + 2 \, a x^{2} + a - b}\right ) + 2 \, a x^{2} \log \left (a x^{4} + 2 \, a x^{2} + a - b\right ) - 8 \, a x^{2} \log \left (x\right ) - 2 \, a + 2 \, b}{4 \, {\left (a^{2} - 2 \, a b + b^{2}\right )} x^{2}}, \frac {{\left (a + b\right )} x^{2} \sqrt {-\frac {a}{b}} \arctan \left (\frac {b \sqrt {-\frac {a}{b}}}{a x^{2} + a}\right ) + a x^{2} \log \left (a x^{4} + 2 \, a x^{2} + a - b\right ) - 4 \, a x^{2} \log \left (x\right ) - a + b}{2 \, {\left (a^{2} - 2 \, a b + b^{2}\right )} x^{2}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 372 vs.
\(2 (85) = 170\).
time = 20.62, size = 372, normalized size = 3.84 \begin {gather*} - \frac {2 a \log {\left (x \right )}}{\left (a - b\right )^{2}} + \left (\frac {a}{2 \left (a - b\right )^{2}} - \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right ) \log {\left (x^{2} + \frac {- 4 a^{2} b \left (\frac {a}{2 \left (a - b\right )^{2}} - \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right ) + a^{2} + 8 a b^{2} \left (\frac {a}{2 \left (a - b\right )^{2}} - \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right ) + 3 a b - 4 b^{3} \left (\frac {a}{2 \left (a - b\right )^{2}} - \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right )}{a^{2} + a b} \right )} + \left (\frac {a}{2 \left (a - b\right )^{2}} + \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right ) \log {\left (x^{2} + \frac {- 4 a^{2} b \left (\frac {a}{2 \left (a - b\right )^{2}} + \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right ) + a^{2} + 8 a b^{2} \left (\frac {a}{2 \left (a - b\right )^{2}} + \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right ) + 3 a b - 4 b^{3} \left (\frac {a}{2 \left (a - b\right )^{2}} + \frac {\sqrt {a b} \left (a + b\right )}{4 b \left (a^{2} - 2 a b + b^{2}\right )}\right )}{a^{2} + a b} \right )} - \frac {1}{x^{2} \cdot \left (2 a - 2 b\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 4.37, size = 126, normalized size = 1.30 \begin {gather*} \frac {a \log \left (a x^{4} + 2 \, a x^{2} + a - b\right )}{2 \, {\left (a^{2} - 2 \, a b + b^{2}\right )}} - \frac {a \log \left (x^{2}\right )}{a^{2} - 2 \, a b + b^{2}} + \frac {{\left (a^{2} + a b\right )} \arctan \left (\frac {a x^{2} + a}{\sqrt {-a b}}\right )}{2 \, {\left (a^{2} - 2 \, a b + b^{2}\right )} \sqrt {-a b}} + \frac {2 \, a x^{2} - a + b}{2 \, {\left (a^{2} - 2 \, a b + b^{2}\right )} x^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 4.87, size = 389, normalized size = 4.01 \begin {gather*} \frac {\ln \left (100\,a\,{\left (a\,b\right )}^{7/2}-198\,b\,{\left (a\,b\right )}^{7/2}-a^3\,{\left (a\,b\right )}^{5/2}+100\,b^3\,{\left (a\,b\right )}^{5/2}-b^5\,{\left (a\,b\right )}^{3/2}+a^2\,b^6-100\,a^3\,b^5+198\,a^4\,b^4-100\,a^5\,b^3+a^6\,b^2+a^2\,b^6\,x^2-100\,a^3\,b^5\,x^2+198\,a^4\,b^4\,x^2-100\,a^5\,b^3\,x^2+a^6\,b^2\,x^2\right )\,\left (\frac {a\,\sqrt {a\,b}}{4}+b\,\left (\frac {a}{2}+\frac {\sqrt {a\,b}}{4}\right )\right )}{a^2\,b-2\,a\,b^2+b^3}-\frac {2\,a\,\ln \left (x\right )}{a^2-2\,a\,b+b^2}-\frac {\ln \left (198\,b\,{\left (a\,b\right )}^{7/2}-100\,a\,{\left (a\,b\right )}^{7/2}+a^3\,{\left (a\,b\right )}^{5/2}-100\,b^3\,{\left (a\,b\right )}^{5/2}+b^5\,{\left (a\,b\right )}^{3/2}+a^2\,b^6-100\,a^3\,b^5+198\,a^4\,b^4-100\,a^5\,b^3+a^6\,b^2+a^2\,b^6\,x^2-100\,a^3\,b^5\,x^2+198\,a^4\,b^4\,x^2-100\,a^5\,b^3\,x^2+a^6\,b^2\,x^2\right )\,\left (\frac {a\,\sqrt {a\,b}}{4}-b\,\left (\frac {a}{2}-\frac {\sqrt {a\,b}}{4}\right )\right )}{a^2\,b-2\,a\,b^2+b^3}-\frac {1}{2\,x^2\,\left (a-b\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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