Optimal. Leaf size=25 \[ \frac {2 c^6 e^{-a}}{\left (c^4+\frac {e^{-2 a}}{x^2}\right )^2} \]
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Rubi [A]
time = 0.03, antiderivative size = 25, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {5664, 5666,
267} \begin {gather*} \frac {2 e^{-a} c^6}{\left (\frac {e^{-2 a}}{x^2}+c^4\right )^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 267
Rule 5664
Rule 5666
Rubi steps
\begin {align*} \int \text {sech}^3\left (a+2 \log \left (c \sqrt {x}\right )\right ) \, dx &=\frac {2 \text {Subst}\left (\int x \text {sech}^3(a+2 \log (x)) \, dx,x,c \sqrt {x}\right )}{c^2}\\ &=\frac {\left (16 e^{-3 a}\right ) \text {Subst}\left (\int \frac {1}{\left (1+\frac {e^{-2 a}}{x^4}\right )^3 x^5} \, dx,x,c \sqrt {x}\right )}{c^2}\\ &=\frac {2 c^6 e^{-a}}{\left (c^4+\frac {e^{-2 a}}{x^2}\right )^2}\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(62\) vs. \(2(25)=50\).
time = 0.09, size = 62, normalized size = 2.48 \begin {gather*} -\frac {2 (\cosh (a)-\sinh (a)) \left (2 c^4 x^2+\cosh ^2(a)-2 \cosh (a) \sinh (a)+\sinh ^2(a)\right )}{c^2 \left (\left (1+c^4 x^2\right ) \cosh (a)+\left (-1+c^4 x^2\right ) \sinh (a)\right )^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [F]
time = 2.57, size = 0, normalized size = 0.00 \[\int \mathrm {sech}\left (a +2 \ln \left (c \sqrt {x}\right )\right )^{3}\, dx\]
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] Leaf count of result is larger than twice the leaf count of optimal. 74 vs.
\(2 (23) = 46\).
time = 0.28, size = 74, normalized size = 2.96 \begin {gather*} -\frac {2 \, {\left (\frac {2 \, c^{4} x^{2} e^{\left (2 \, a\right )}}{c^{8} x^{4} e^{\left (5 \, a\right )} + 2 \, c^{4} x^{2} e^{\left (3 \, a\right )} + e^{a}} + \frac {1}{c^{8} x^{4} e^{\left (5 \, a\right )} + 2 \, c^{4} x^{2} e^{\left (3 \, a\right )} + e^{a}}\right )}}{c^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 48 vs.
\(2 (23) = 46\).
time = 0.37, size = 48, normalized size = 1.92 \begin {gather*} -\frac {2 \, {\left (2 \, c^{4} x^{2} e^{\left (2 \, a\right )} + 1\right )}}{c^{10} x^{4} e^{\left (5 \, a\right )} + 2 \, c^{6} x^{2} e^{\left (3 \, a\right )} + c^{2} e^{a}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \operatorname {sech}^{3}{\left (a + 2 \log {\left (c \sqrt {x} \right )} \right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.41, size = 38, normalized size = 1.52 \begin {gather*} -\frac {2 \, {\left (2 \, c^{4} x^{2} e^{\left (2 \, a\right )} + 1\right )} e^{\left (-a\right )}}{{\left (c^{4} x^{2} e^{\left (2 \, a\right )} + 1\right )}^{2} c^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.53, size = 49, normalized size = 1.96 \begin {gather*} -\frac {\frac {2\,{\mathrm {e}}^{-a}}{c^2}+4\,c^2\,x^2\,{\mathrm {e}}^a}{{\mathrm {e}}^{4\,a}\,c^8\,x^4+2\,{\mathrm {e}}^{2\,a}\,c^4\,x^2+1} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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