Optimal. Leaf size=28 \[ i \log (i-\sinh (x))+\frac {2 i}{1+i \sinh (x)} \]
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Rubi [A]
time = 0.04, antiderivative size = 28, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 3, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.273, Rules used = {4476, 2746, 45}
\begin {gather*} \frac {2 i}{1+i \sinh (x)}+i \log (-\sinh (x)+i) \end {gather*}
Antiderivative was successfully verified.
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Rule 45
Rule 2746
Rule 4476
Rubi steps
\begin {align*} \int \frac {1}{(\text {sech}(x)+i \tanh (x))^3} \, dx &=\int \frac {\cosh ^3(x)}{(1+i \sinh (x))^3} \, dx\\ &=-\left (i \text {Subst}\left (\int \frac {1-x}{(1+x)^2} \, dx,x,i \sinh (x)\right )\right )\\ &=-\left (i \text {Subst}\left (\int \left (\frac {1}{-1-x}+\frac {2}{(1+x)^2}\right ) \, dx,x,i \sinh (x)\right )\right )\\ &=i \log (i-\sinh (x))+\frac {2 i}{1+i \sinh (x)}\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 40, normalized size = 1.43 \begin {gather*} -2 \text {ArcTan}\left (\tanh \left (\frac {x}{2}\right )\right )+i \log (\cosh (x))+\frac {2 i}{\left (\cosh \left (\frac {x}{2}\right )+i \sinh \left (\frac {x}{2}\right )\right )^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 55 vs. \(2 (24 ) = 48\).
time = 2.07, size = 56, normalized size = 2.00
method | result | size |
risch | \(-i x +\frac {4 \,{\mathrm e}^{x}}{\left ({\mathrm e}^{x}-i\right )^{2}}+2 i \ln \left ({\mathrm e}^{x}-i\right )\) | \(26\) |
default | \(-i \ln \left (\tanh \left (\frac {x}{2}\right )+1\right )-i \ln \left (\tanh \left (\frac {x}{2}\right )-1\right )+2 i \ln \left (-i+\tanh \left (\frac {x}{2}\right )\right )-\frac {4 i}{\left (-i+\tanh \left (\frac {x}{2}\right )\right )^{2}}-\frac {4}{-i+\tanh \left (\frac {x}{2}\right )}\) | \(56\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.27, size = 33, normalized size = 1.18 \begin {gather*} i \, x - \frac {4 \, e^{\left (-x\right )}}{2 i \, e^{\left (-x\right )} + e^{\left (-2 \, x\right )} - 1} + 2 i \, \log \left (e^{\left (-x\right )} + i\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 50 vs. \(2 (20) = 40\).
time = 0.36, size = 50, normalized size = 1.79 \begin {gather*} \frac {-i \, x e^{\left (2 \, x\right )} - 2 \, {\left (x - 2\right )} e^{x} - 2 \, {\left (-i \, e^{\left (2 \, x\right )} - 2 \, e^{x} + i\right )} \log \left (e^{x} - i\right ) + i \, x}{e^{\left (2 \, x\right )} - 2 i \, e^{x} - 1} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 432 vs. \(2 (17) = 34\).
time = 0.84, size = 432, normalized size = 15.43 \begin {gather*} - \frac {2 i x \tanh ^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} - \frac {4 x \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {2 i x \operatorname {sech}^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {2 i \log {\left (\tanh {\left (x \right )} + 1 \right )} \tanh ^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {4 \log {\left (\tanh {\left (x \right )} + 1 \right )} \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} - \frac {2 i \log {\left (\tanh {\left (x \right )} + 1 \right )} \operatorname {sech}^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} - \frac {2 i \log {\left (\tanh {\left (x \right )} - i \operatorname {sech}{\left (x \right )} \right )} \tanh ^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} - \frac {4 \log {\left (\tanh {\left (x \right )} - i \operatorname {sech}{\left (x \right )} \right )} \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {2 i \log {\left (\tanh {\left (x \right )} - i \operatorname {sech}{\left (x \right )} \right )} \operatorname {sech}^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {i \tanh ^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {i \operatorname {sech}^{2}{\left (x \right )}}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} + \frac {i}{- 2 \tanh ^{2}{\left (x \right )} + 4 i \tanh {\left (x \right )} \operatorname {sech}{\left (x \right )} + 2 \operatorname {sech}^{2}{\left (x \right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.40, size = 27, normalized size = 0.96 \begin {gather*} \frac {4 \, e^{x}}{{\left (e^{x} - i\right )}^{2}} - i \, \log \left (i \, e^{x}\right ) + 2 i \, \log \left (-i \, e^{x} - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.19, size = 41, normalized size = 1.46 \begin {gather*} -x\,1{}\mathrm {i}+\ln \left ({\mathrm {e}}^x-\mathrm {i}\right )\,2{}\mathrm {i}-\frac {4{}\mathrm {i}}{1-{\mathrm {e}}^{2\,x}+{\mathrm {e}}^x\,2{}\mathrm {i}}+\frac {4}{{\mathrm {e}}^x-\mathrm {i}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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