Integrand size = 11, antiderivative size = 13 \[ \int \frac {a+b x^3}{x^4} \, dx=-\frac {a}{3 x^3}+b \log (x) \]
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Time = 0.00 (sec) , antiderivative size = 13, 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} \[ \int \frac {a+b x^3}{x^4} \, dx=b \log (x)-\frac {a}{3 x^3} \]
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Rule 14
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a}{x^4}+\frac {b}{x}\right ) \, dx \\ & = -\frac {a}{3 x^3}+b \log (x) \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 13, normalized size of antiderivative = 1.00 \[ \int \frac {a+b x^3}{x^4} \, dx=-\frac {a}{3 x^3}+b \log (x) \]
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Time = 0.03 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.92
method | result | size |
default | \(-\frac {a}{3 x^{3}}+b \ln \left (x \right )\) | \(12\) |
norman | \(-\frac {a}{3 x^{3}}+b \ln \left (x \right )\) | \(12\) |
risch | \(-\frac {a}{3 x^{3}}+b \ln \left (x \right )\) | \(12\) |
parallelrisch | \(\frac {3 b \ln \left (x \right ) x^{3}-a}{3 x^{3}}\) | \(18\) |
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none
Time = 0.24 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.31 \[ \int \frac {a+b x^3}{x^4} \, dx=\frac {3 \, b x^{3} \log \left (x\right ) - a}{3 \, x^{3}} \]
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Time = 0.05 (sec) , antiderivative size = 10, normalized size of antiderivative = 0.77 \[ \int \frac {a+b x^3}{x^4} \, dx=- \frac {a}{3 x^{3}} + b \log {\left (x \right )} \]
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none
Time = 0.20 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.08 \[ \int \frac {a+b x^3}{x^4} \, dx=\frac {1}{3} \, b \log \left (x^{3}\right ) - \frac {a}{3 \, x^{3}} \]
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none
Time = 0.36 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.38 \[ \int \frac {a+b x^3}{x^4} \, dx=b \log \left ({\left | x \right |}\right ) - \frac {b x^{3} + a}{3 \, x^{3}} \]
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Time = 5.58 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.85 \[ \int \frac {a+b x^3}{x^4} \, dx=b\,\ln \left (x\right )-\frac {a}{3\,x^3} \]
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