3.135 \(\int \frac{x^2}{\sqrt{\text{csch}(2 \log (c x))}} \, dx\)

Optimal. Leaf size=69 \[ \frac{x^3}{4 \sqrt{\text{csch}(2 \log (c x))}}-\frac{\tanh ^{-1}\left (\sqrt{1-\frac{1}{c^4 x^4}}\right )}{4 c^4 x \sqrt{1-\frac{1}{c^4 x^4}} \sqrt{\text{csch}(2 \log (c x))}} \]

[Out]

x^3/(4*Sqrt[Csch[2*Log[c*x]]]) - ArcTanh[Sqrt[1 - 1/(c^4*x^4)]]/(4*c^4*Sqrt[1 - 1/(c^4*x^4)]*x*Sqrt[Csch[2*Log
[c*x]]])

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Rubi [A]  time = 0.0580091, antiderivative size = 69, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.4, Rules used = {5552, 5550, 266, 47, 63, 206} \[ \frac{x^3}{4 \sqrt{\text{csch}(2 \log (c x))}}-\frac{\tanh ^{-1}\left (\sqrt{1-\frac{1}{c^4 x^4}}\right )}{4 c^4 x \sqrt{1-\frac{1}{c^4 x^4}} \sqrt{\text{csch}(2 \log (c x))}} \]

Antiderivative was successfully verified.

[In]

Int[x^2/Sqrt[Csch[2*Log[c*x]]],x]

[Out]

x^3/(4*Sqrt[Csch[2*Log[c*x]]]) - ArcTanh[Sqrt[1 - 1/(c^4*x^4)]]/(4*c^4*Sqrt[1 - 1/(c^4*x^4)]*x*Sqrt[Csch[2*Log
[c*x]]])

Rule 5552

Int[Csch[((a_.) + Log[(c_.)*(x_)^(n_.)]*(b_.))*(d_.)]^(p_.)*((e_.)*(x_))^(m_.), x_Symbol] :> Dist[(e*x)^(m + 1
)/(e*n*(c*x^n)^((m + 1)/n)), Subst[Int[x^((m + 1)/n - 1)*Csch[d*(a + b*Log[x])]^p, x], x, c*x^n], x] /; FreeQ[
{a, b, c, d, e, m, n, p}, x] && (NeQ[c, 1] || NeQ[n, 1])

Rule 5550

Int[Csch[((a_.) + Log[x_]*(b_.))*(d_.)]^(p_.)*((e_.)*(x_))^(m_.), x_Symbol] :> Dist[(Csch[d*(a + b*Log[x])]^p*
(1 - 1/(E^(2*a*d)*x^(2*b*d)))^p)/x^(-(b*d*p)), Int[(e*x)^m/(x^(b*d*p)*(1 - 1/(E^(2*a*d)*x^(2*b*d)))^p), x], x]
/; FreeQ[{a, b, d, e, m, p}, x] &&  !IntegerQ[p]

Rule 266

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Dist[1/n, Subst[Int[x^(Simplify[(m + 1)/n] - 1)*(a
+ b*x)^p, x], x, x^n], x] /; FreeQ[{a, b, m, n, p}, x] && IntegerQ[Simplify[(m + 1)/n]]

Rule 47

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[((a + b*x)^(m + 1)*(c + d*x)^n)/(b*
(m + 1)), x] - Dist[(d*n)/(b*(m + 1)), Int[(a + b*x)^(m + 1)*(c + d*x)^(n - 1), x], x] /; FreeQ[{a, b, c, d},
x] && NeQ[b*c - a*d, 0] && GtQ[n, 0] && LtQ[m, -1] &&  !(IntegerQ[n] &&  !IntegerQ[m]) &&  !(ILeQ[m + n + 2, 0
] && (FractionQ[m] || GeQ[2*n + m + 1, 0])) && IntLinearQ[a, b, c, d, m, n, x]

Rule 63

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> With[{p = Denominator[m]}, Dist[p/b, Sub
st[Int[x^(p*(m + 1) - 1)*(c - (a*d)/b + (d*x^p)/b)^n, x], x, (a + b*x)^(1/p)], x]] /; FreeQ[{a, b, c, d}, x] &
& NeQ[b*c - a*d, 0] && LtQ[-1, m, 0] && LeQ[-1, n, 0] && LeQ[Denominator[n], Denominator[m]] && IntLinearQ[a,
b, c, d, m, n, x]

Rule 206

Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1*ArcTanh[(Rt[-b, 2]*x)/Rt[a, 2]])/(Rt[a, 2]*Rt[-b, 2]), x]
/; FreeQ[{a, b}, x] && NegQ[a/b] && (GtQ[a, 0] || LtQ[b, 0])

Rubi steps

\begin{align*} \int \frac{x^2}{\sqrt{\text{csch}(2 \log (c x))}} \, dx &=\frac{\operatorname{Subst}\left (\int \frac{x^2}{\sqrt{\text{csch}(2 \log (x))}} \, dx,x,c x\right )}{c^3}\\ &=\frac{\operatorname{Subst}\left (\int \sqrt{1-\frac{1}{x^4}} x^3 \, dx,x,c x\right )}{c^4 \sqrt{1-\frac{1}{c^4 x^4}} x \sqrt{\text{csch}(2 \log (c x))}}\\ &=-\frac{\operatorname{Subst}\left (\int \frac{\sqrt{1-x}}{x^2} \, dx,x,\frac{1}{c^4 x^4}\right )}{4 c^4 \sqrt{1-\frac{1}{c^4 x^4}} x \sqrt{\text{csch}(2 \log (c x))}}\\ &=\frac{x^3}{4 \sqrt{\text{csch}(2 \log (c x))}}+\frac{\operatorname{Subst}\left (\int \frac{1}{\sqrt{1-x} x} \, dx,x,\frac{1}{c^4 x^4}\right )}{8 c^4 \sqrt{1-\frac{1}{c^4 x^4}} x \sqrt{\text{csch}(2 \log (c x))}}\\ &=\frac{x^3}{4 \sqrt{\text{csch}(2 \log (c x))}}-\frac{\operatorname{Subst}\left (\int \frac{1}{1-x^2} \, dx,x,\sqrt{1-\frac{1}{c^4 x^4}}\right )}{4 c^4 \sqrt{1-\frac{1}{c^4 x^4}} x \sqrt{\text{csch}(2 \log (c x))}}\\ &=\frac{x^3}{4 \sqrt{\text{csch}(2 \log (c x))}}-\frac{\tanh ^{-1}\left (\sqrt{1-\frac{1}{c^4 x^4}}\right )}{4 c^4 \sqrt{1-\frac{1}{c^4 x^4}} x \sqrt{\text{csch}(2 \log (c x))}}\\ \end{align*}

Mathematica [A]  time = 0.136255, size = 74, normalized size = 1.07 \[ \frac{x \left (c^2 x^2 \sqrt{1-c^4 x^4}+\sin ^{-1}\left (c^2 x^2\right )\right )}{4 c^2 \sqrt{2-2 c^4 x^4} \sqrt{\frac{c^2 x^2}{c^4 x^4-1}}} \]

Antiderivative was successfully verified.

[In]

Integrate[x^2/Sqrt[Csch[2*Log[c*x]]],x]

[Out]

(x*(c^2*x^2*Sqrt[1 - c^4*x^4] + ArcSin[c^2*x^2]))/(4*c^2*Sqrt[2 - 2*c^4*x^4]*Sqrt[(c^2*x^2)/(-1 + c^4*x^4)])

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Maple [A]  time = 0.05, size = 97, normalized size = 1.4 \begin{align*}{\frac{{x}^{3}\sqrt{2}}{8}{\frac{1}{\sqrt{{\frac{{c}^{2}{x}^{2}}{{c}^{4}{x}^{4}-1}}}}}}-{\frac{\sqrt{2}x}{8}\ln \left ({{c}^{4}{x}^{2}{\frac{1}{\sqrt{{c}^{4}}}}}+\sqrt{{c}^{4}{x}^{4}-1} \right ){\frac{1}{\sqrt{{c}^{4}}}}{\frac{1}{\sqrt{{\frac{{c}^{2}{x}^{2}}{{c}^{4}{x}^{4}-1}}}}}{\frac{1}{\sqrt{{c}^{4}{x}^{4}-1}}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^2/csch(2*ln(c*x))^(1/2),x)

[Out]

1/8*x^3*2^(1/2)/(c^2*x^2/(c^4*x^4-1))^(1/2)-1/8*ln(c^4*x^2/(c^4)^(1/2)+(c^4*x^4-1)^(1/2))/(c^4)^(1/2)*2^(1/2)*
x/(c^2*x^2/(c^4*x^4-1))^(1/2)/(c^4*x^4-1)^(1/2)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{x^{2}}{\sqrt{\operatorname{csch}\left (2 \, \log \left (c x\right )\right )}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2/csch(2*log(c*x))^(1/2),x, algorithm="maxima")

[Out]

integrate(x^2/sqrt(csch(2*log(c*x))), x)

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Fricas [A]  time = 1.59258, size = 193, normalized size = 2.8 \begin{align*} \frac{2 \, \sqrt{2}{\left (c^{5} x^{5} - c x\right )} \sqrt{\frac{c^{2} x^{2}}{c^{4} x^{4} - 1}} + \sqrt{2} \log \left (2 \, c^{4} x^{4} - 2 \,{\left (c^{5} x^{5} - c x\right )} \sqrt{\frac{c^{2} x^{2}}{c^{4} x^{4} - 1}} - 1\right )}{16 \, c^{3}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2/csch(2*log(c*x))^(1/2),x, algorithm="fricas")

[Out]

1/16*(2*sqrt(2)*(c^5*x^5 - c*x)*sqrt(c^2*x^2/(c^4*x^4 - 1)) + sqrt(2)*log(2*c^4*x^4 - 2*(c^5*x^5 - c*x)*sqrt(c
^2*x^2/(c^4*x^4 - 1)) - 1))/c^3

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{x^{2}}{\sqrt{\operatorname{csch}{\left (2 \log{\left (c x \right )} \right )}}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**2/csch(2*ln(c*x))**(1/2),x)

[Out]

Integral(x**2/sqrt(csch(2*log(c*x))), x)

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{x^{2}}{\sqrt{\operatorname{csch}\left (2 \, \log \left (c x\right )\right )}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2/csch(2*log(c*x))^(1/2),x, algorithm="giac")

[Out]

integrate(x^2/sqrt(csch(2*log(c*x))), x)