Optimal. Leaf size=44 \[ \frac{a^2 x}{b^3}-\frac{a^3 \log (a+b x)}{b^4}-\frac{a x^2}{2 b^2}+\frac{x^3}{3 b} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.0196606, antiderivative size = 44, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 1, integrand size = 11, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.091, Rules used = {43} \[ \frac{a^2 x}{b^3}-\frac{a^3 \log (a+b x)}{b^4}-\frac{a x^2}{2 b^2}+\frac{x^3}{3 b} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 43
Rubi steps
\begin{align*} \int \frac{x^3}{a+b x} \, dx &=\int \left (\frac{a^2}{b^3}-\frac{a x}{b^2}+\frac{x^2}{b}-\frac{a^3}{b^3 (a+b x)}\right ) \, dx\\ &=\frac{a^2 x}{b^3}-\frac{a x^2}{2 b^2}+\frac{x^3}{3 b}-\frac{a^3 \log (a+b x)}{b^4}\\ \end{align*}
Mathematica [A] time = 0.0040877, size = 44, normalized size = 1. \[ \frac{a^2 x}{b^3}-\frac{a^3 \log (a+b x)}{b^4}-\frac{a x^2}{2 b^2}+\frac{x^3}{3 b} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.003, size = 41, normalized size = 0.9 \begin{align*}{\frac{{a}^{2}x}{{b}^{3}}}-{\frac{a{x}^{2}}{2\,{b}^{2}}}+{\frac{{x}^{3}}{3\,b}}-{\frac{{a}^{3}\ln \left ( bx+a \right ) }{{b}^{4}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A] time = 1.02967, size = 57, normalized size = 1.3 \begin{align*} -\frac{a^{3} \log \left (b x + a\right )}{b^{4}} + \frac{2 \, b^{2} x^{3} - 3 \, a b x^{2} + 6 \, a^{2} x}{6 \, b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 1.44858, size = 92, normalized size = 2.09 \begin{align*} \frac{2 \, b^{3} x^{3} - 3 \, a b^{2} x^{2} + 6 \, a^{2} b x - 6 \, a^{3} \log \left (b x + a\right )}{6 \, b^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [A] time = 0.339452, size = 37, normalized size = 0.84 \begin{align*} - \frac{a^{3} \log{\left (a + b x \right )}}{b^{4}} + \frac{a^{2} x}{b^{3}} - \frac{a x^{2}}{2 b^{2}} + \frac{x^{3}}{3 b} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A] time = 1.18386, size = 58, normalized size = 1.32 \begin{align*} -\frac{a^{3} \log \left ({\left | b x + a \right |}\right )}{b^{4}} + \frac{2 \, b^{2} x^{3} - 3 \, a b x^{2} + 6 \, a^{2} x}{6 \, b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]