Optimal. Leaf size=27 \[ \frac {x^2}{2 b}-\frac {a \log \left (a+b x^2\right )}{2 b^2} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.02, antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {266, 43} \[ \frac {x^2}{2 b}-\frac {a \log \left (a+b x^2\right )}{2 b^2} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 43
Rule 266
Rubi steps
\begin {align*} \int \frac {x^3}{a+b x^2} \, dx &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {x}{a+b x} \, dx,x,x^2\right )\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \left (\frac {1}{b}-\frac {a}{b (a+b x)}\right ) \, dx,x,x^2\right )\\ &=\frac {x^2}{2 b}-\frac {a \log \left (a+b x^2\right )}{2 b^2}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A] time = 0.00, size = 27, normalized size = 1.00 \[ \frac {x^2}{2 b}-\frac {a \log \left (a+b x^2\right )}{2 b^2} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
fricas [A] time = 1.07, size = 22, normalized size = 0.81 \[ \frac {b x^{2} - a \log \left (b x^{2} + a\right )}{2 \, b^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
giac [A] time = 1.09, size = 24, normalized size = 0.89 \[ \frac {x^{2}}{2 \, b} - \frac {a \log \left ({\left | b x^{2} + a \right |}\right )}{2 \, b^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maple [A] time = 0.00, size = 24, normalized size = 0.89 \[ \frac {x^{2}}{2 b}-\frac {a \ln \left (b \,x^{2}+a \right )}{2 b^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maxima [A] time = 1.32, size = 23, normalized size = 0.85 \[ \frac {x^{2}}{2 \, b} - \frac {a \log \left (b x^{2} + a\right )}{2 \, b^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
mupad [B] time = 0.04, size = 22, normalized size = 0.81 \[ -\frac {a\,\ln \left (b\,x^2+a\right )-b\,x^2}{2\,b^2} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
sympy [A] time = 0.13, size = 20, normalized size = 0.74 \[ - \frac {a \log {\left (a + b x^{2} \right )}}{2 b^{2}} + \frac {x^{2}}{2 b} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________