Integrand size = 11, antiderivative size = 57 \[ \int \frac {x^4}{a+b x} \, dx=-\frac {a^3 x}{b^4}+\frac {a^2 x^2}{2 b^3}-\frac {a x^3}{3 b^2}+\frac {x^4}{4 b}+\frac {a^4 \log (a+b x)}{b^5} \]
[Out]
Time = 0.02 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {45} \[ \int \frac {x^4}{a+b x} \, dx=\frac {a^4 \log (a+b x)}{b^5}-\frac {a^3 x}{b^4}+\frac {a^2 x^2}{2 b^3}-\frac {a x^3}{3 b^2}+\frac {x^4}{4 b} \]
[In]
[Out]
Rule 45
Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {a^3}{b^4}+\frac {a^2 x}{b^3}-\frac {a x^2}{b^2}+\frac {x^3}{b}+\frac {a^4}{b^4 (a+b x)}\right ) \, dx \\ & = -\frac {a^3 x}{b^4}+\frac {a^2 x^2}{2 b^3}-\frac {a x^3}{3 b^2}+\frac {x^4}{4 b}+\frac {a^4 \log (a+b x)}{b^5} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.00 \[ \int \frac {x^4}{a+b x} \, dx=-\frac {a^3 x}{b^4}+\frac {a^2 x^2}{2 b^3}-\frac {a x^3}{3 b^2}+\frac {x^4}{4 b}+\frac {a^4 \log (a+b x)}{b^5} \]
[In]
[Out]
Time = 0.19 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.91
method | result | size |
default | \(-\frac {-\frac {1}{4} b^{3} x^{4}+\frac {1}{3} a \,b^{2} x^{3}-\frac {1}{2} a^{2} b \,x^{2}+a^{3} x}{b^{4}}+\frac {a^{4} \ln \left (b x +a \right )}{b^{5}}\) | \(52\) |
norman | \(-\frac {a^{3} x}{b^{4}}+\frac {a^{2} x^{2}}{2 b^{3}}-\frac {a \,x^{3}}{3 b^{2}}+\frac {x^{4}}{4 b}+\frac {a^{4} \ln \left (b x +a \right )}{b^{5}}\) | \(52\) |
risch | \(-\frac {a^{3} x}{b^{4}}+\frac {a^{2} x^{2}}{2 b^{3}}-\frac {a \,x^{3}}{3 b^{2}}+\frac {x^{4}}{4 b}+\frac {a^{4} \ln \left (b x +a \right )}{b^{5}}\) | \(52\) |
parallelrisch | \(\frac {3 b^{4} x^{4}-4 a \,b^{3} x^{3}+6 a^{2} b^{2} x^{2}+12 a^{4} \ln \left (b x +a \right )-12 a^{3} b x}{12 b^{5}}\) | \(53\) |
[In]
[Out]
none
Time = 0.22 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.91 \[ \int \frac {x^4}{a+b x} \, dx=\frac {3 \, b^{4} x^{4} - 4 \, a b^{3} x^{3} + 6 \, a^{2} b^{2} x^{2} - 12 \, a^{3} b x + 12 \, a^{4} \log \left (b x + a\right )}{12 \, b^{5}} \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.86 \[ \int \frac {x^4}{a+b x} \, dx=\frac {a^{4} \log {\left (a + b x \right )}}{b^{5}} - \frac {a^{3} x}{b^{4}} + \frac {a^{2} x^{2}}{2 b^{3}} - \frac {a x^{3}}{3 b^{2}} + \frac {x^{4}}{4 b} \]
[In]
[Out]
none
Time = 0.20 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.91 \[ \int \frac {x^4}{a+b x} \, dx=\frac {a^{4} \log \left (b x + a\right )}{b^{5}} + \frac {3 \, b^{3} x^{4} - 4 \, a b^{2} x^{3} + 6 \, a^{2} b x^{2} - 12 \, a^{3} x}{12 \, b^{4}} \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 53, normalized size of antiderivative = 0.93 \[ \int \frac {x^4}{a+b x} \, dx=\frac {a^{4} \log \left ({\left | b x + a \right |}\right )}{b^{5}} + \frac {3 \, b^{3} x^{4} - 4 \, a b^{2} x^{3} + 6 \, a^{2} b x^{2} - 12 \, a^{3} x}{12 \, b^{4}} \]
[In]
[Out]
Time = 0.11 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.89 \[ \int \frac {x^4}{a+b x} \, dx=\frac {x^4}{4\,b}+\frac {a^4\,\ln \left (a+b\,x\right )}{b^5}-\frac {a\,x^3}{3\,b^2}-\frac {a^3\,x}{b^4}+\frac {a^2\,x^2}{2\,b^3} \]
[In]
[Out]