Optimal. Leaf size=76 \[ \frac {(2 A b-a B) \log \left (a+b x^3\right )}{3 a^3}-\frac {\log (x) (2 A b-a B)}{a^3}-\frac {A b-a B}{3 a^2 \left (a+b x^3\right )}-\frac {A}{3 a^2 x^3} \]
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Rubi [A] time = 0.08, antiderivative size = 76, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.100, Rules used = {446, 77} \[ -\frac {A b-a B}{3 a^2 \left (a+b x^3\right )}+\frac {(2 A b-a B) \log \left (a+b x^3\right )}{3 a^3}-\frac {\log (x) (2 A b-a B)}{a^3}-\frac {A}{3 a^2 x^3} \]
Antiderivative was successfully verified.
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Rule 77
Rule 446
Rubi steps
\begin {align*} \int \frac {A+B x^3}{x^4 \left (a+b x^3\right )^2} \, dx &=\frac {1}{3} \operatorname {Subst}\left (\int \frac {A+B x}{x^2 (a+b x)^2} \, dx,x,x^3\right )\\ &=\frac {1}{3} \operatorname {Subst}\left (\int \left (\frac {A}{a^2 x^2}+\frac {-2 A b+a B}{a^3 x}-\frac {b (-A b+a B)}{a^2 (a+b x)^2}-\frac {b (-2 A b+a B)}{a^3 (a+b x)}\right ) \, dx,x,x^3\right )\\ &=-\frac {A}{3 a^2 x^3}-\frac {A b-a B}{3 a^2 \left (a+b x^3\right )}-\frac {(2 A b-a B) \log (x)}{a^3}+\frac {(2 A b-a B) \log \left (a+b x^3\right )}{3 a^3}\\ \end {align*}
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Mathematica [A] time = 0.07, size = 64, normalized size = 0.84 \[ \frac {\frac {a (a B-A b)}{a+b x^3}+(2 A b-a B) \log \left (a+b x^3\right )+3 \log (x) (a B-2 A b)-\frac {a A}{x^3}}{3 a^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.96, size = 118, normalized size = 1.55 \[ \frac {{\left (B a^{2} - 2 \, A a b\right )} x^{3} - A a^{2} - {\left ({\left (B a b - 2 \, A b^{2}\right )} x^{6} + {\left (B a^{2} - 2 \, A a b\right )} x^{3}\right )} \log \left (b x^{3} + a\right ) + 3 \, {\left ({\left (B a b - 2 \, A b^{2}\right )} x^{6} + {\left (B a^{2} - 2 \, A a b\right )} x^{3}\right )} \log \relax (x)}{3 \, {\left (a^{3} b x^{6} + a^{4} x^{3}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.19, size = 80, normalized size = 1.05 \[ \frac {{\left (B a - 2 \, A b\right )} \log \left ({\left | x \right |}\right )}{a^{3}} + \frac {B a x^{3} - 2 \, A b x^{3} - A a}{3 \, {\left (b x^{6} + a x^{3}\right )} a^{2}} - \frac {{\left (B a b - 2 \, A b^{2}\right )} \log \left ({\left | b x^{3} + a \right |}\right )}{3 \, a^{3} b} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.06, size = 87, normalized size = 1.14 \[ -\frac {A b}{3 \left (b \,x^{3}+a \right ) a^{2}}-\frac {2 A b \ln \relax (x )}{a^{3}}+\frac {2 A b \ln \left (b \,x^{3}+a \right )}{3 a^{3}}+\frac {B}{3 \left (b \,x^{3}+a \right ) a}+\frac {B \ln \relax (x )}{a^{2}}-\frac {B \ln \left (b \,x^{3}+a \right )}{3 a^{2}}-\frac {A}{3 a^{2} x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.50, size = 76, normalized size = 1.00 \[ \frac {{\left (B a - 2 \, A b\right )} x^{3} - A a}{3 \, {\left (a^{2} b x^{6} + a^{3} x^{3}\right )}} - \frac {{\left (B a - 2 \, A b\right )} \log \left (b x^{3} + a\right )}{3 \, a^{3}} + \frac {{\left (B a - 2 \, A b\right )} \log \left (x^{3}\right )}{3 \, a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 2.43, size = 78, normalized size = 1.03 \[ \frac {\ln \left (b\,x^3+a\right )\,\left (2\,A\,b-B\,a\right )}{3\,a^3}-\frac {\frac {A}{3\,a}+\frac {x^3\,\left (2\,A\,b-B\,a\right )}{3\,a^2}}{b\,x^6+a\,x^3}-\frac {\ln \relax (x)\,\left (2\,A\,b-B\,a\right )}{a^3} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 1.44, size = 70, normalized size = 0.92 \[ \frac {- A a + x^{3} \left (- 2 A b + B a\right )}{3 a^{3} x^{3} + 3 a^{2} b x^{6}} + \frac {\left (- 2 A b + B a\right ) \log {\relax (x )}}{a^{3}} - \frac {\left (- 2 A b + B a\right ) \log {\left (\frac {a}{b} + x^{3} \right )}}{3 a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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