Optimal. Leaf size=43 \[ -\frac {4}{3} \text {Ei}(-2 \log (x))-\frac {1}{3 x^2 \log ^3(x)}+\frac {1}{3 x^2 \log ^2(x)}-\frac {2}{3 x^2 \log (x)} \]
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Rubi [A] time = 0.06, antiderivative size = 43, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 3, integrand size = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.375, Rules used = {2306, 2309, 2178} \[ -\frac {4}{3} \text {ExpIntegralEi}(-2 \log (x))+\frac {1}{3 x^2 \log ^2(x)}-\frac {1}{3 x^2 \log ^3(x)}-\frac {2}{3 x^2 \log (x)} \]
Antiderivative was successfully verified.
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Rule 2178
Rule 2306
Rule 2309
Rubi steps
\begin {align*} \int \frac {1}{x^3 \log ^4(x)} \, dx &=-\frac {1}{3 x^2 \log ^3(x)}-\frac {2}{3} \int \frac {1}{x^3 \log ^3(x)} \, dx\\ &=-\frac {1}{3 x^2 \log ^3(x)}+\frac {1}{3 x^2 \log ^2(x)}+\frac {2}{3} \int \frac {1}{x^3 \log ^2(x)} \, dx\\ &=-\frac {1}{3 x^2 \log ^3(x)}+\frac {1}{3 x^2 \log ^2(x)}-\frac {2}{3 x^2 \log (x)}-\frac {4}{3} \int \frac {1}{x^3 \log (x)} \, dx\\ &=-\frac {1}{3 x^2 \log ^3(x)}+\frac {1}{3 x^2 \log ^2(x)}-\frac {2}{3 x^2 \log (x)}-\frac {4}{3} \operatorname {Subst}\left (\int \frac {e^{-2 x}}{x} \, dx,x,\log (x)\right )\\ &=-\frac {4}{3} \text {Ei}(-2 \log (x))-\frac {1}{3 x^2 \log ^3(x)}+\frac {1}{3 x^2 \log ^2(x)}-\frac {2}{3 x^2 \log (x)}\\ \end {align*}
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Mathematica [A] time = 0.02, size = 43, normalized size = 1.00 \[ -\frac {4}{3} \text {Ei}(-2 \log (x))-\frac {1}{3 x^2 \log ^3(x)}+\frac {1}{3 x^2 \log ^2(x)}-\frac {2}{3 x^2 \log (x)} \]
Antiderivative was successfully verified.
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IntegrateAlgebraic [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{x^3 \log ^4(x)} \, dx \]
Verification is Not applicable to the result.
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fricas [A] time = 0.96, size = 34, normalized size = 0.79 \[ -\frac {4 \, x^{2} \log \relax (x)^{3} \operatorname {log\_integral}\left (\frac {1}{x^{2}}\right ) + 2 \, \log \relax (x)^{2} - \log \relax (x) + 1}{3 \, x^{2} \log \relax (x)^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{x^{3} \log \relax (x)^{4}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.03, size = 31, normalized size = 0.72
method | result | size |
risch | \(-\frac {2 \ln \relax (x )^{2}-\ln \relax (x )+1}{3 x^{2} \ln \relax (x )^{3}}+\frac {4 \expIntegralEi \left (1, 2 \ln \relax (x )\right )}{3}\) | \(31\) |
default | \(-\frac {1}{3 x^{2} \ln \relax (x )^{3}}+\frac {1}{3 x^{2} \ln \relax (x )^{2}}-\frac {2}{3 x^{2} \ln \relax (x )}+\frac {4 \expIntegralEi \left (1, 2 \ln \relax (x )\right )}{3}\) | \(37\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.54, size = 8, normalized size = 0.19 \[ -8 \, \Gamma \left (-3, 2 \, \log \relax (x)\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.28, size = 29, normalized size = 0.67 \[ -\frac {4\,\mathrm {ei}\left (-2\,\ln \relax (x)\right )}{3}-\frac {\frac {2\,{\ln \relax (x)}^2}{3}-\frac {\ln \relax (x)}{3}+\frac {1}{3}}{x^2\,{\ln \relax (x)}^3} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.72, size = 32, normalized size = 0.74 \[ - \frac {4 \operatorname {Ei}{\left (- 2 \log {\relax (x )} \right )}}{3} + \frac {- 2 \log {\relax (x )}^{2} + \log {\relax (x )} - 1}{3 x^{2} \log {\relax (x )}^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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