Integrand size = 31, antiderivative size = 22 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x} \]
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Time = 0.03 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.097, Rules used = {12, 14, 2631} \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x} \]
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Rule 12
Rule 14
Rule 2631
Rubi steps \begin{align*} \text {integral}& = \frac {1}{4} \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{x^2} \, dx \\ & = \frac {1}{4} \int \left (\frac {4 \left (1+25 x^2\right )}{x^2}-\frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{x^2}\right ) \, dx \\ & = -\left (\frac {1}{4} \int \frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{x^2} \, dx\right )+\int \frac {1+25 x^2}{x^2} \, dx \\ & = \frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x}-\frac {1}{4} \int 4 \left (25+\frac {1}{x^2}\right ) \, dx+\int \left (25+\frac {1}{x^2}\right ) \, dx \\ & = -\frac {1}{x}+25 x+\frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x}-\int \left (25+\frac {1}{x^2}\right ) \, dx \\ & = \frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x} \]
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Time = 0.12 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.82
method | result | size |
default | \(\frac {\ln \left (\frac {x^{4} {\mathrm e}^{50 x^{2}}}{5}\right )}{4 x}\) | \(18\) |
norman | \(\frac {\ln \left (\frac {x^{4} {\mathrm e}^{50 x^{2}}}{5}\right )}{4 x}\) | \(18\) |
parallelrisch | \(\frac {\ln \left (\frac {x^{4} {\mathrm e}^{50 x^{2}}}{5}\right )}{4 x}\) | \(18\) |
parts | \(\frac {\ln \left (\frac {x^{4} {\mathrm e}^{50 x^{2}}}{5}\right )}{4 x}\) | \(18\) |
risch | \(\frac {\ln \left ({\mathrm e}^{50 x^{2}}\right )}{4 x}-\frac {i \pi \,\operatorname {csgn}\left (i x^{2}\right ) \operatorname {csgn}\left (i x \right ) \operatorname {csgn}\left (i x^{3}\right )+i \pi \operatorname {csgn}\left (i x^{2}\right )^{3}-i \pi \,\operatorname {csgn}\left (i x^{2}\right ) \operatorname {csgn}\left (i x^{3}\right )^{2}-i \pi \operatorname {csgn}\left (i x^{4}\right )^{2} \operatorname {csgn}\left (i x \right )+i \pi \operatorname {csgn}\left (i x^{4} {\mathrm e}^{50 x^{2}}\right )^{3}-i \pi \,\operatorname {csgn}\left (i x^{3}\right ) \operatorname {csgn}\left (i x^{4}\right )^{2}-i \pi \,\operatorname {csgn}\left (i x^{4}\right ) \operatorname {csgn}\left (i x^{4} {\mathrm e}^{50 x^{2}}\right )^{2}+i \pi \operatorname {csgn}\left (i x^{4}\right )^{3}+i \pi \,\operatorname {csgn}\left (i x^{2}\right ) \operatorname {csgn}\left (i x \right )^{2}-i \pi \,\operatorname {csgn}\left (i x \right ) \operatorname {csgn}\left (i x^{3}\right )^{2}-2 i \pi \operatorname {csgn}\left (i x^{2}\right )^{2} \operatorname {csgn}\left (i x \right )+i \pi \operatorname {csgn}\left (i x^{3}\right )^{3}+i \pi \,\operatorname {csgn}\left (i x^{4}\right ) \operatorname {csgn}\left (i {\mathrm e}^{50 x^{2}}\right ) \operatorname {csgn}\left (i x^{4} {\mathrm e}^{50 x^{2}}\right )-i \pi \,\operatorname {csgn}\left (i {\mathrm e}^{50 x^{2}}\right ) \operatorname {csgn}\left (i x^{4} {\mathrm e}^{50 x^{2}}\right )^{2}+i \pi \,\operatorname {csgn}\left (i x^{3}\right ) \operatorname {csgn}\left (i x^{4}\right ) \operatorname {csgn}\left (i x \right )+2 \ln \left (5\right )-8 \ln \left (x \right )}{8 x}\) | \(333\) |
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Time = 0.26 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.77 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {\log \left (\frac {1}{5} \, x^{4} e^{\left (50 \, x^{2}\right )}\right )}{4 \, x} \]
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Time = 0.08 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.68 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {\log {\left (\frac {x^{4} e^{50 x^{2}}}{5} \right )}}{4 x} \]
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Leaf count of result is larger than twice the leaf count of optimal. 38 vs. \(2 (17) = 34\).
Time = 0.20 (sec) , antiderivative size = 38, normalized size of antiderivative = 1.73 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=25 \, x - \frac {25 \, x^{2} - 1}{x} + \frac {\log \left (\frac {1}{5} \, x^{4} e^{\left (50 \, x^{2}\right )}\right )}{4 \, x} - \frac {1}{x} \]
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Time = 0.28 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.68 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {25}{2} \, x + \frac {\log \left (\frac {1}{5} \, x^{4}\right )}{4 \, x} \]
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Time = 13.30 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.68 \[ \int \frac {4+100 x^2-\log \left (\frac {1}{5} e^{50 x^2} x^4\right )}{4 x^2} \, dx=\frac {25\,x}{2}+\frac {\ln \left (\frac {x^4}{5}\right )}{4\,x} \]
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