Integrand size = 11, antiderivative size = 17 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {a x^4}{4}+\frac {b x^8}{8} \]
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Time = 0.00 (sec) , antiderivative size = 17, 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 = {14} \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {a x^4}{4}+\frac {b x^8}{8} \]
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Rule 14
Rubi steps \begin{align*} \text {integral}& = \int \left (a x^3+b x^7\right ) \, dx \\ & = \frac {a x^4}{4}+\frac {b x^8}{8} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.00 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {a x^4}{4}+\frac {b x^8}{8} \]
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Time = 0.06 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.82
method | result | size |
gosper | \(\frac {1}{4} a \,x^{4}+\frac {1}{8} b \,x^{8}\) | \(14\) |
norman | \(\frac {1}{4} a \,x^{4}+\frac {1}{8} b \,x^{8}\) | \(14\) |
parallelrisch | \(\frac {1}{4} a \,x^{4}+\frac {1}{8} b \,x^{8}\) | \(14\) |
default | \(\frac {\left (b \,x^{4}+a \right )^{2}}{8 b}\) | \(15\) |
risch | \(\frac {b \,x^{8}}{8}+\frac {a \,x^{4}}{4}+\frac {a^{2}}{8 b}\) | \(22\) |
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none
Time = 0.23 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.76 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {1}{8} \, b x^{8} + \frac {1}{4} \, a x^{4} \]
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Time = 0.02 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.71 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {a x^{4}}{4} + \frac {b x^{8}}{8} \]
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none
Time = 0.21 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.82 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {{\left (b x^{4} + a\right )}^{2}}{8 \, b} \]
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none
Time = 0.28 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.76 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {1}{8} \, b x^{8} + \frac {1}{4} \, a x^{4} \]
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Time = 0.02 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.76 \[ \int x^3 \left (a+b x^4\right ) \, dx=\frac {b\,x^8}{8}+\frac {a\,x^4}{4} \]
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