Optimal. Leaf size=44 \[ \frac {\left (a+b x^2\right ) \log \left (a+b x^2\right )}{2 b \sqrt {a^2+2 a b x^2+b^2 x^4}} \]
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Rubi [A] time = 0.03, antiderivative size = 44, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 24, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {1107, 608, 31} \begin {gather*} \frac {\left (a+b x^2\right ) \log \left (a+b x^2\right )}{2 b \sqrt {a^2+2 a b x^2+b^2 x^4}} \end {gather*}
Antiderivative was successfully verified.
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Rule 31
Rule 608
Rule 1107
Rubi steps
\begin {align*} \int \frac {x}{\sqrt {a^2+2 a b x^2+b^2 x^4}} \, dx &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{\sqrt {a^2+2 a b x+b^2 x^2}} \, dx,x,x^2\right )\\ &=\frac {\left (a b+b^2 x^2\right ) \operatorname {Subst}\left (\int \frac {1}{a b+b^2 x} \, dx,x,x^2\right )}{2 \sqrt {a^2+2 a b x^2+b^2 x^4}}\\ &=\frac {\left (a+b x^2\right ) \log \left (a+b x^2\right )}{2 b \sqrt {a^2+2 a b x^2+b^2 x^4}}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 35, normalized size = 0.80 \begin {gather*} \frac {\left (a+b x^2\right ) \log \left (a+b x^2\right )}{2 b \sqrt {\left (a+b x^2\right )^2}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [B] time = 0.25, size = 149, normalized size = 3.39 \begin {gather*} -\frac {\log \left (\sqrt {a^2+2 a b x^2+b^2 x^4}-a-\sqrt {b^2} x^2\right )}{4 \sqrt {b^2}}-\frac {\log \left (\sqrt {a^2+2 a b x^2+b^2 x^4}+a-\sqrt {b^2} x^2\right )}{4 \sqrt {b^2}}-\frac {\tanh ^{-1}\left (\frac {\sqrt {b^2} x^2}{a}-\frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{a}\right )}{2 b} \end {gather*}
Antiderivative was successfully verified.
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fricas [A] time = 1.63, size = 13, normalized size = 0.30 \begin {gather*} \frac {\log \left (b x^{2} + a\right )}{2 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.15, size = 22, normalized size = 0.50 \begin {gather*} \frac {\log \left ({\left | b x^{2} + a \right |}\right ) \mathrm {sgn}\left (b x^{2} + a\right )}{2 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.00, size = 32, normalized size = 0.73 \begin {gather*} \frac {\left (b \,x^{2}+a \right ) \ln \left (b \,x^{2}+a \right )}{2 \sqrt {\left (b \,x^{2}+a \right )^{2}}\, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.35, size = 13, normalized size = 0.30 \begin {gather*} \frac {\log \left (b x^{2} + a\right )}{2 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 4.42, size = 33, normalized size = 0.75 \begin {gather*} \frac {\ln \left (b^2\,x^2+a\,b\right )\,\mathrm {sign}\left (2\,b^2\,x^2+2\,a\,b\right )}{2\,\sqrt {b^2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.15, size = 10, normalized size = 0.23 \begin {gather*} \frac {\log {\left (a + b x^{2} \right )}}{2 b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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