Optimal. Leaf size=125 \[ \frac {a x^6}{6}+\frac {i b \text {Li}_3\left (-i e^{d x^2+c}\right )}{d^3}-\frac {i b \text {Li}_3\left (i e^{d x^2+c}\right )}{d^3}-\frac {i b x^2 \text {Li}_2\left (-i e^{d x^2+c}\right )}{d^2}+\frac {i b x^2 \text {Li}_2\left (i e^{d x^2+c}\right )}{d^2}+\frac {b x^4 \tan ^{-1}\left (e^{c+d x^2}\right )}{d} \]
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Rubi [A] time = 0.14, antiderivative size = 125, normalized size of antiderivative = 1.00, number of steps used = 10, number of rules used = 6, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.375, Rules used = {14, 5436, 4180, 2531, 2282, 6589} \[ -\frac {i b x^2 \text {PolyLog}\left (2,-i e^{c+d x^2}\right )}{d^2}+\frac {i b x^2 \text {PolyLog}\left (2,i e^{c+d x^2}\right )}{d^2}+\frac {i b \text {PolyLog}\left (3,-i e^{c+d x^2}\right )}{d^3}-\frac {i b \text {PolyLog}\left (3,i e^{c+d x^2}\right )}{d^3}+\frac {a x^6}{6}+\frac {b x^4 \tan ^{-1}\left (e^{c+d x^2}\right )}{d} \]
Antiderivative was successfully verified.
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Rule 14
Rule 2282
Rule 2531
Rule 4180
Rule 5436
Rule 6589
Rubi steps
\begin {align*} \int x^5 \left (a+b \text {sech}\left (c+d x^2\right )\right ) \, dx &=\int \left (a x^5+b x^5 \text {sech}\left (c+d x^2\right )\right ) \, dx\\ &=\frac {a x^6}{6}+b \int x^5 \text {sech}\left (c+d x^2\right ) \, dx\\ &=\frac {a x^6}{6}+\frac {1}{2} b \operatorname {Subst}\left (\int x^2 \text {sech}(c+d x) \, dx,x,x^2\right )\\ &=\frac {a x^6}{6}+\frac {b x^4 \tan ^{-1}\left (e^{c+d x^2}\right )}{d}-\frac {(i b) \operatorname {Subst}\left (\int x \log \left (1-i e^{c+d x}\right ) \, dx,x,x^2\right )}{d}+\frac {(i b) \operatorname {Subst}\left (\int x \log \left (1+i e^{c+d x}\right ) \, dx,x,x^2\right )}{d}\\ &=\frac {a x^6}{6}+\frac {b x^4 \tan ^{-1}\left (e^{c+d x^2}\right )}{d}-\frac {i b x^2 \text {Li}_2\left (-i e^{c+d x^2}\right )}{d^2}+\frac {i b x^2 \text {Li}_2\left (i e^{c+d x^2}\right )}{d^2}+\frac {(i b) \operatorname {Subst}\left (\int \text {Li}_2\left (-i e^{c+d x}\right ) \, dx,x,x^2\right )}{d^2}-\frac {(i b) \operatorname {Subst}\left (\int \text {Li}_2\left (i e^{c+d x}\right ) \, dx,x,x^2\right )}{d^2}\\ &=\frac {a x^6}{6}+\frac {b x^4 \tan ^{-1}\left (e^{c+d x^2}\right )}{d}-\frac {i b x^2 \text {Li}_2\left (-i e^{c+d x^2}\right )}{d^2}+\frac {i b x^2 \text {Li}_2\left (i e^{c+d x^2}\right )}{d^2}+\frac {(i b) \operatorname {Subst}\left (\int \frac {\text {Li}_2(-i x)}{x} \, dx,x,e^{c+d x^2}\right )}{d^3}-\frac {(i b) \operatorname {Subst}\left (\int \frac {\text {Li}_2(i x)}{x} \, dx,x,e^{c+d x^2}\right )}{d^3}\\ &=\frac {a x^6}{6}+\frac {b x^4 \tan ^{-1}\left (e^{c+d x^2}\right )}{d}-\frac {i b x^2 \text {Li}_2\left (-i e^{c+d x^2}\right )}{d^2}+\frac {i b x^2 \text {Li}_2\left (i e^{c+d x^2}\right )}{d^2}+\frac {i b \text {Li}_3\left (-i e^{c+d x^2}\right )}{d^3}-\frac {i b \text {Li}_3\left (i e^{c+d x^2}\right )}{d^3}\\ \end {align*}
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Mathematica [A] time = 1.41, size = 143, normalized size = 1.14 \[ \frac {a x^6}{6}+\frac {i b \left (d^2 x^4 \log \left (1-i e^{c+d x^2}\right )-d^2 x^4 \log \left (1+i e^{c+d x^2}\right )-2 d x^2 \text {Li}_2\left (-i e^{d x^2+c}\right )+2 d x^2 \text {Li}_2\left (i e^{d x^2+c}\right )+2 \text {Li}_3\left (-i e^{d x^2+c}\right )-2 \text {Li}_3\left (i e^{d x^2+c}\right )\right )}{2 d^3} \]
Antiderivative was successfully verified.
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fricas [C] time = 0.42, size = 254, normalized size = 2.03 \[ \frac {a d^{3} x^{6} + 6 i \, b d x^{2} {\rm Li}_2\left (i \, \cosh \left (d x^{2} + c\right ) + i \, \sinh \left (d x^{2} + c\right )\right ) - 6 i \, b d x^{2} {\rm Li}_2\left (-i \, \cosh \left (d x^{2} + c\right ) - i \, \sinh \left (d x^{2} + c\right )\right ) + 3 i \, b c^{2} \log \left (\cosh \left (d x^{2} + c\right ) + \sinh \left (d x^{2} + c\right ) + i\right ) - 3 i \, b c^{2} \log \left (\cosh \left (d x^{2} + c\right ) + \sinh \left (d x^{2} + c\right ) - i\right ) + {\left (-3 i \, b d^{2} x^{4} + 3 i \, b c^{2}\right )} \log \left (i \, \cosh \left (d x^{2} + c\right ) + i \, \sinh \left (d x^{2} + c\right ) + 1\right ) + {\left (3 i \, b d^{2} x^{4} - 3 i \, b c^{2}\right )} \log \left (-i \, \cosh \left (d x^{2} + c\right ) - i \, \sinh \left (d x^{2} + c\right ) + 1\right ) - 6 i \, b {\rm polylog}\left (3, i \, \cosh \left (d x^{2} + c\right ) + i \, \sinh \left (d x^{2} + c\right )\right ) + 6 i \, b {\rm polylog}\left (3, -i \, \cosh \left (d x^{2} + c\right ) - i \, \sinh \left (d x^{2} + c\right )\right )}{6 \, d^{3}} \]
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 \[ \int {\left (b \operatorname {sech}\left (d x^{2} + c\right ) + a\right )} x^{5}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.34, size = 0, normalized size = 0.00 \[ \int x^{5} \left (a +b \,\mathrm {sech}\left (d \,x^{2}+c \right )\right )\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \frac {1}{6} \, a x^{6} + 2 \, b \int \frac {x^{5}}{e^{\left (d x^{2} + c\right )} + e^{\left (-d x^{2} - c\right )}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int x^5\,\left (a+\frac {b}{\mathrm {cosh}\left (d\,x^2+c\right )}\right ) \,d x \]
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 \[ \int x^{5} \left (a + b \operatorname {sech}{\left (c + d x^{2} \right )}\right )\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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