Optimal. Leaf size=33 \[ \frac {-4-x^2-\log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{4+\frac {x^4}{5}} \]
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Rubi [F] time = 11.34, antiderivative size = 0, normalized size of antiderivative = 0.00, number of steps used = 0, number of rules used = 0, integrand size = 0, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.000, Rules used = {} \begin {gather*} \int \frac {-800 x-40 x^5+\left (800 x+800 x^3-280 x^5-40 x^7\right ) \log (x)+\left (-100-200 x^2+75 x^4+10 x^6\right ) \log ^3(x)+\left (-80 x^5 \log (x)+20 x^4 \log ^3(x)\right ) \log \left (\frac {-4 x^2+x \log ^2(x)}{\log ^2(x)}\right )}{\left (-1600 x^2-160 x^6-4 x^{10}\right ) \log (x)+\left (400 x+40 x^5+x^9\right ) \log ^3(x)} \, dx \end {gather*}
Verification is not applicable to the result.
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Rubi steps
\begin {gather*} \begin {aligned} \text {integral} &=\int \frac {800 x+40 x^5-\left (800 x+800 x^3-280 x^5-40 x^7\right ) \log (x)-\left (-100-200 x^2+75 x^4+10 x^6\right ) \log ^3(x)-\left (-80 x^5 \log (x)+20 x^4 \log ^3(x)\right ) \log \left (\frac {-4 x^2+x \log ^2(x)}{\log ^2(x)}\right )}{x \left (20+x^4\right )^2 \log (x) \left (4 x-\log ^2(x)\right )} \, dx\\ &=\int \left (\frac {40 \left (-20-20 x^2+7 x^4+x^6\right )}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}+\frac {800}{\left (20+x^4\right )^2 \log (x) \left (4 x-\log ^2(x)\right )}+\frac {40 x^4}{\left (20+x^4\right )^2 \log (x) \left (4 x-\log ^2(x)\right )}-\frac {5 \left (-20-40 x^2+15 x^4+2 x^6\right ) \log ^2(x)}{x \left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}+\frac {20 x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2}\right ) \, dx\\ &=-\left (5 \int \frac {\left (-20-40 x^2+15 x^4+2 x^6\right ) \log ^2(x)}{x \left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx\right )+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx+40 \int \frac {-20-20 x^2+7 x^4+x^6}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx+40 \int \frac {x^4}{\left (20+x^4\right )^2 \log (x) \left (4 x-\log ^2(x)\right )} \, dx+800 \int \frac {1}{\left (20+x^4\right )^2 \log (x) \left (4 x-\log ^2(x)\right )} \, dx\\ &=-\left (5 \int \left (\frac {20+40 x^2-15 x^4-2 x^6}{x \left (20+x^4\right )^2}+\frac {4 \left (-20-40 x^2+15 x^4+2 x^6\right )}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}\right ) \, dx\right )+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx+40 \int \left (-\frac {40 \left (4+x^2\right )}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}+\frac {7+x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx+40 \int \left (\frac {x^3}{4 \left (20+x^4\right )^2 \log (x)}+\frac {x^3 \log (x)}{4 \left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}\right ) \, dx+800 \int \left (\frac {1}{4 x \left (20+x^4\right )^2 \log (x)}+\frac {\log (x)}{4 x \left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}\right ) \, dx\\ &=-\left (5 \int \frac {20+40 x^2-15 x^4-2 x^6}{x \left (20+x^4\right )^2} \, dx\right )+10 \int \frac {x^3}{\left (20+x^4\right )^2 \log (x)} \, dx+10 \int \frac {x^3 \log (x)}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx-20 \int \frac {-20-40 x^2+15 x^4+2 x^6}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx+40 \int \frac {7+x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx+200 \int \frac {1}{x \left (20+x^4\right )^2 \log (x)} \, dx+200 \int \frac {\log (x)}{x \left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx-1600 \int \frac {4+x^2}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx\\ &=-\frac {x \left (5 x-x^3\right )}{20+x^4}+\frac {1}{16} \int -\frac {80}{x \left (20+x^4\right )} \, dx+10 \int \frac {x^3}{\left (20+x^4\right )^2 \log (x)} \, dx+10 \int \frac {x^3 \log (x)}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx-20 \int \left (-\frac {80 \left (4+x^2\right )}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}+\frac {15+2 x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx+40 \int \left (\frac {7}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}+\frac {x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx+200 \int \frac {1}{x \left (20+x^4\right )^2 \log (x)} \, dx+200 \int \left (-\frac {x^3 \log (x)}{20 \left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}-\frac {x^3 \log (x)}{400 \left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}-\frac {\log (x)}{400 x \left (-4 x+\log ^2(x)\right )}\right ) \, dx-1600 \int \left (\frac {4}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}+\frac {x^2}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}\right ) \, dx\\ &=-\frac {x \left (5 x-x^3\right )}{20+x^4}-\frac {1}{2} \int \frac {x^3 \log (x)}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx-\frac {1}{2} \int \frac {\log (x)}{x \left (-4 x+\log ^2(x)\right )} \, dx-5 \int \frac {1}{x \left (20+x^4\right )} \, dx+10 \int \frac {x^3}{\left (20+x^4\right )^2 \log (x)} \, dx-20 \int \frac {15+2 x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx+40 \int \frac {x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx+200 \int \frac {1}{x \left (20+x^4\right )^2 \log (x)} \, dx+280 \int \frac {1}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx-1600 \int \frac {x^2}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx+1600 \int \frac {4+x^2}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx-6400 \int \frac {1}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx\\ &=-\frac {x \left (5 x-x^3\right )}{20+x^4}-\frac {1}{4} \log \left (-4 x+\log ^2(x)\right )-\frac {1}{2} \int \left (\frac {x \log (x)}{2 \left (-2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )}+\frac {x \log (x)}{2 \left (2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx-\frac {5}{4} \operatorname {Subst}\left (\int \frac {1}{x (20+x)} \, dx,x,x^4\right )+10 \int \frac {x^3}{\left (20+x^4\right )^2 \log (x)} \, dx-20 \int \left (\frac {15}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}+\frac {2 x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx+40 \int \left (-\frac {1}{2 \left (2 i \sqrt {5}-x^2\right ) \left (4 x-\log ^2(x)\right )}+\frac {1}{2 \left (2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx+200 \int \frac {1}{x \left (20+x^4\right )^2 \log (x)} \, dx+280 \int \left (\frac {i}{4 \sqrt {5} \left (2 i \sqrt {5}-x^2\right ) \left (4 x-\log ^2(x)\right )}+\frac {i}{4 \sqrt {5} \left (2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )}\right ) \, dx-1600 \int \frac {x^2}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx+1600 \int \left (\frac {4}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}+\frac {x^2}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )}\right ) \, dx-6400 \int \frac {1}{\left (20+x^4\right )^2 \left (4 x-\log ^2(x)\right )} \, dx-\int \frac {1}{-4 x+\log ^2(x)} \, dx\\ &=-\frac {x \left (5 x-x^3\right )}{20+x^4}-\frac {1}{4} \log \left (-4 x+\log ^2(x)\right )-\frac {1}{16} \operatorname {Subst}\left (\int \frac {1}{x} \, dx,x,x^4\right )+\frac {1}{16} \operatorname {Subst}\left (\int \frac {1}{20+x} \, dx,x,x^4\right )-\frac {1}{4} \int \frac {x \log (x)}{\left (-2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )} \, dx-\frac {1}{4} \int \frac {x \log (x)}{\left (2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )} \, dx+10 \int \frac {x^3}{\left (20+x^4\right )^2 \log (x)} \, dx-20 \int \frac {1}{\left (2 i \sqrt {5}-x^2\right ) \left (4 x-\log ^2(x)\right )} \, dx+20 \int \frac {1}{\left (2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )} \, dx+20 \int \frac {x^3 \log \left (x-\frac {4 x^2}{\log ^2(x)}\right )}{\left (20+x^4\right )^2} \, dx-40 \int \frac {x^2}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx+200 \int \frac {1}{x \left (20+x^4\right )^2 \log (x)} \, dx-300 \int \frac {1}{\left (20+x^4\right ) \left (4 x-\log ^2(x)\right )} \, dx+\left (14 i \sqrt {5}\right ) \int \frac {1}{\left (2 i \sqrt {5}-x^2\right ) \left (4 x-\log ^2(x)\right )} \, dx+\left (14 i \sqrt {5}\right ) \int \frac {1}{\left (2 i \sqrt {5}+x^2\right ) \left (4 x-\log ^2(x)\right )} \, dx-\int \frac {1}{-4 x+\log ^2(x)} \, dx\\ &=\text {Rest of rules removed due to large latex content} \end {aligned} 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Mathematica [A] time = 0.13, size = 26, normalized size = 0.79 \begin {gather*} -\frac {5 \left (4+x^2+\log \left (x-\frac {4 x^2}{\log ^2(x)}\right )\right )}{20+x^4} \end {gather*}
Antiderivative was successfully verified.
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fricas [A] time = 0.91, size = 32, normalized size = 0.97 \begin {gather*} -\frac {5 \, {\left (x^{2} + \log \left (\frac {x \log \relax (x)^{2} - 4 \, x^{2}}{\log \relax (x)^{2}}\right ) + 4\right )}}{x^{4} + 20} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.33, size = 58, normalized size = 1.76 \begin {gather*} -\frac {5 \, {\left (x^{2} + 4\right )}}{x^{4} + 20} - \frac {5 \, \log \left (\log \relax (x)^{2} - 4 \, x\right )}{x^{4} + 20} + \frac {5 \, \log \left (\log \relax (x)^{2}\right )}{x^{4} + 20} - \frac {5 \, \log \relax (x)}{x^{4} + 20} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [C] time = 0.49, size = 414, normalized size = 12.55
method | result | size |
risch | \(-\frac {5 \ln \left (-\frac {\ln \relax (x )^{2}}{4}+x \right )}{x^{4}+20}-\frac {5 \left (i \pi \mathrm {csgn}\left (i \ln \relax (x )\right )^{2} \mathrm {csgn}\left (i \ln \relax (x )^{2}\right )-i \pi \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right ) x}{\ln \relax (x )^{2}}\right )^{3}-i \pi \,\mathrm {csgn}\left (i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )\right ) \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )}{\ln \relax (x )^{2}}\right )^{2}-2 i \pi \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right ) x}{\ln \relax (x )^{2}}\right )^{2}-i \pi \,\mathrm {csgn}\left (i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )\right ) \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )}{\ln \relax (x )^{2}}\right ) \mathrm {csgn}\left (\frac {i}{\ln \relax (x )^{2}}\right )-i \pi \,\mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )}{\ln \relax (x )^{2}}\right ) \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right ) x}{\ln \relax (x )^{2}}\right ) \mathrm {csgn}\left (i x \right )+i \pi \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right ) x}{\ln \relax (x )^{2}}\right )^{2} \mathrm {csgn}\left (i x \right )+i \pi \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )}{\ln \relax (x )^{2}}\right )^{3}+i \pi \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )}{\ln \relax (x )^{2}}\right )^{2} \mathrm {csgn}\left (\frac {i}{\ln \relax (x )^{2}}\right )-2 i \pi \,\mathrm {csgn}\left (i \ln \relax (x )\right ) \mathrm {csgn}\left (i \ln \relax (x )^{2}\right )^{2}+i \pi \mathrm {csgn}\left (i \ln \relax (x )^{2}\right )^{3}-i \pi \,\mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right )}{\ln \relax (x )^{2}}\right ) \mathrm {csgn}\left (\frac {i \left (\frac {\ln \relax (x )^{2}}{4}-x \right ) x}{\ln \relax (x )^{2}}\right )^{2}+2 i \pi +8+2 x^{2}+4 \ln \relax (2)+2 \ln \relax (x )-4 \ln \left (\ln \relax (x )\right )\right )}{2 \left (x^{4}+20\right )}\) | \(414\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.48, size = 30, normalized size = 0.91 \begin {gather*} -\frac {5 \, {\left (x^{2} + \log \left (\log \relax (x)^{2} - 4 \, x\right ) + \log \relax (x) - 2 \, \log \left (\log \relax (x)\right ) + 4\right )}}{x^{4} + 20} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 3.91, size = 44, normalized size = 1.33 \begin {gather*} -\frac {5\,x^2+20}{x^4+20}-\frac {5\,\ln \left (\frac {x\,{\ln \relax (x)}^2-4\,x^2}{{\ln \relax (x)}^2}\right )}{x^4+20} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.50, size = 37, normalized size = 1.12 \begin {gather*} \frac {- 5 x^{2} - 20}{x^{4} + 20} - \frac {5 \log {\left (\frac {- 4 x^{2} + x \log {\relax (x )}^{2}}{\log {\relax (x )}^{2}} \right )}}{x^{4} + 20} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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