Optimal. Leaf size=35 \[ \frac {c \log \left (b+c x^2\right )}{2 b^2}-\frac {c \log (x)}{b^2}-\frac {1}{2 b x^2} \]
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Rubi [A] time = 0.03, antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 17, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.176, Rules used = {1584, 266, 44} \[ \frac {c \log \left (b+c x^2\right )}{2 b^2}-\frac {c \log (x)}{b^2}-\frac {1}{2 b x^2} \]
Antiderivative was successfully verified.
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Rule 44
Rule 266
Rule 1584
Rubi steps
\begin {align*} \int \frac {1}{x \left (b x^2+c x^4\right )} \, dx &=\int \frac {1}{x^3 \left (b+c x^2\right )} \, dx\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{x^2 (b+c x)} \, dx,x,x^2\right )\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \left (\frac {1}{b x^2}-\frac {c}{b^2 x}+\frac {c^2}{b^2 (b+c x)}\right ) \, dx,x,x^2\right )\\ &=-\frac {1}{2 b x^2}-\frac {c \log (x)}{b^2}+\frac {c \log \left (b+c x^2\right )}{2 b^2}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 35, normalized size = 1.00 \[ \frac {c \log \left (b+c x^2\right )}{2 b^2}-\frac {c \log (x)}{b^2}-\frac {1}{2 b x^2} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.72, size = 33, normalized size = 0.94 \[ \frac {c x^{2} \log \left (c x^{2} + b\right ) - 2 \, c x^{2} \log \relax (x) - b}{2 \, b^{2} x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.15, size = 43, normalized size = 1.23 \[ -\frac {c \log \left (x^{2}\right )}{2 \, b^{2}} + \frac {c \log \left ({\left | c x^{2} + b \right |}\right )}{2 \, b^{2}} + \frac {c x^{2} - b}{2 \, b^{2} x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 32, normalized size = 0.91 \[ -\frac {c \ln \relax (x )}{b^{2}}+\frac {c \ln \left (c \,x^{2}+b \right )}{2 b^{2}}-\frac {1}{2 b \,x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.37, size = 33, normalized size = 0.94 \[ \frac {c \log \left (c x^{2} + b\right )}{2 \, b^{2}} - \frac {c \log \left (x^{2}\right )}{2 \, b^{2}} - \frac {1}{2 \, b x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.06, size = 31, normalized size = 0.89 \[ \frac {c\,\ln \left (c\,x^2+b\right )}{2\,b^2}-\frac {1}{2\,b\,x^2}-\frac {c\,\ln \relax (x)}{b^2} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.28, size = 31, normalized size = 0.89 \[ - \frac {1}{2 b x^{2}} - \frac {c \log {\relax (x )}}{b^{2}} + \frac {c \log {\left (\frac {b}{c} + x^{2} \right )}}{2 b^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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