Optimal. Leaf size=2 \[ \text {li}(t) \]
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Rubi [A]
time = 0.00, antiderivative size = 2, normalized size of antiderivative = 1.00, number of steps
used = 1, number of rules used = 1, integrand size = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {2335}
\begin {gather*} \text {li}(t) \end {gather*}
Antiderivative was successfully verified.
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Rule 2335
Rubi steps
\begin {align*} \int \frac {1}{\log (t)} \, dt &=\text {li}(t)\\ \end {align*}
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Mathematica [A]
time = 0.05, size = 2, normalized size = 1.00 \begin {gather*} \text {li}(t) \end {gather*}
Antiderivative was successfully verified.
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Mathics [C] Result contains higher order function than in optimal. Order 9 vs. order 4 in
optimal.
time = 1.72, size = 2, normalized size = 1.00 \begin {gather*} \text {li}\left [t\right ] \end {gather*}
Warning: Unable to verify antiderivative.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(8\) vs.
\(2(2)=4\).
time = 0.00, size = 9, normalized size = 4.50
method | result | size |
default | \(-\expIntegral \left (1, -\ln \left (t \right )\right )\) | \(9\) |
risch | \(-\expIntegral \left (1, -\ln \left (t \right )\right )\) | \(9\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.30, size = 3, normalized size = 1.50 \begin {gather*} {\rm Ei}\left (\log \left (t\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.32, size = 2, normalized size = 1.00 \begin {gather*} \operatorname {log\_integral}\left (t\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.27, size = 2, normalized size = 1.00 \begin {gather*} \operatorname {li}{\left (t \right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.00, size = 3, normalized size = 1.50 \begin {gather*} \mathrm {Ei}\left (\ln t\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.01, size = 2, normalized size = 1.00 \begin {gather*} \mathrm {logint}\left (t\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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