3.63 \(\int (1+\coth (x))^3 \, dx\)

Optimal. Leaf size=23 \[ 4 x-\frac{1}{2} (\coth (x)+1)^2-2 \coth (x)+4 \log (\sinh (x)) \]

[Out]

4*x - 2*Coth[x] - (1 + Coth[x])^2/2 + 4*Log[Sinh[x]]

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Rubi [A]  time = 0.0214076, antiderivative size = 23, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 6, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.5, Rules used = {3478, 3477, 3475} \[ 4 x-\frac{1}{2} (\coth (x)+1)^2-2 \coth (x)+4 \log (\sinh (x)) \]

Antiderivative was successfully verified.

[In]

Int[(1 + Coth[x])^3,x]

[Out]

4*x - 2*Coth[x] - (1 + Coth[x])^2/2 + 4*Log[Sinh[x]]

Rule 3478

Int[((a_) + (b_.)*tan[(c_.) + (d_.)*(x_)])^(n_), x_Symbol] :> Simp[(b*(a + b*Tan[c + d*x])^(n - 1))/(d*(n - 1)
), x] + Dist[2*a, Int[(a + b*Tan[c + d*x])^(n - 1), x], x] /; FreeQ[{a, b, c, d}, x] && EqQ[a^2 + b^2, 0] && G
tQ[n, 1]

Rule 3477

Int[((a_) + (b_.)*tan[(c_.) + (d_.)*(x_)])^2, x_Symbol] :> Simp[(a^2 - b^2)*x, x] + (Dist[2*a*b, Int[Tan[c + d
*x], x], x] + Simp[(b^2*Tan[c + d*x])/d, x]) /; FreeQ[{a, b, c, d}, x]

Rule 3475

Int[tan[(c_.) + (d_.)*(x_)], x_Symbol] :> -Simp[Log[RemoveContent[Cos[c + d*x], x]]/d, x] /; FreeQ[{c, d}, x]

Rubi steps

\begin{align*} \int (1+\coth (x))^3 \, dx &=-\frac{1}{2} (1+\coth (x))^2+2 \int (1+\coth (x))^2 \, dx\\ &=4 x-2 \coth (x)-\frac{1}{2} (1+\coth (x))^2+4 \int \coth (x) \, dx\\ &=4 x-2 \coth (x)-\frac{1}{2} (1+\coth (x))^2+4 \log (\sinh (x))\\ \end{align*}

Mathematica [C]  time = 0.149008, size = 61, normalized size = 2.65 \[ \frac{1}{4} \text{csch}^2(x) \left (-6 \sinh (2 x) \, _2F_1\left (-\frac{1}{2},1;\frac{1}{2};\tanh ^2(x)\right )-2 x-8 \log (\tanh (x))-8 \log (\cosh (x))+\cosh (2 x) (2 x+8 \log (\tanh (x))+8 \log (\cosh (x))-1)-1\right ) \]

Antiderivative was successfully verified.

[In]

Integrate[(1 + Coth[x])^3,x]

[Out]

(Csch[x]^2*(-1 - 2*x - 8*Log[Cosh[x]] - 8*Log[Tanh[x]] + Cosh[2*x]*(-1 + 2*x + 8*Log[Cosh[x]] + 8*Log[Tanh[x]]
) - 6*Hypergeometric2F1[-1/2, 1, 1/2, Tanh[x]^2]*Sinh[2*x]))/4

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Maple [A]  time = 0.002, size = 19, normalized size = 0.8 \begin{align*} -{\frac{ \left ({\rm coth} \left (x\right ) \right ) ^{2}}{2}}-3\,{\rm coth} \left (x\right )-4\,\ln \left ({\rm coth} \left (x\right )-1 \right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((1+coth(x))^3,x)

[Out]

-1/2*coth(x)^2-3*coth(x)-4*ln(coth(x)-1)

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Maxima [B]  time = 1.03956, size = 74, normalized size = 3.22 \begin{align*} 5 \, x + \frac{2 \, e^{\left (-2 \, x\right )}}{2 \, e^{\left (-2 \, x\right )} - e^{\left (-4 \, x\right )} - 1} + \frac{6}{e^{\left (-2 \, x\right )} - 1} + \log \left (e^{\left (-x\right )} + 1\right ) + \log \left (e^{\left (-x\right )} - 1\right ) + 3 \, \log \left (\sinh \left (x\right )\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+coth(x))^3,x, algorithm="maxima")

[Out]

5*x + 2*e^(-2*x)/(2*e^(-2*x) - e^(-4*x) - 1) + 6/(e^(-2*x) - 1) + log(e^(-x) + 1) + log(e^(-x) - 1) + 3*log(si
nh(x))

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Fricas [B]  time = 2.03912, size = 479, normalized size = 20.83 \begin{align*} -\frac{2 \,{\left (4 \, \cosh \left (x\right )^{2} - 2 \,{\left (\cosh \left (x\right )^{4} + 4 \, \cosh \left (x\right ) \sinh \left (x\right )^{3} + \sinh \left (x\right )^{4} + 2 \,{\left (3 \, \cosh \left (x\right )^{2} - 1\right )} \sinh \left (x\right )^{2} - 2 \, \cosh \left (x\right )^{2} + 4 \,{\left (\cosh \left (x\right )^{3} - \cosh \left (x\right )\right )} \sinh \left (x\right ) + 1\right )} \log \left (\frac{2 \, \sinh \left (x\right )}{\cosh \left (x\right ) - \sinh \left (x\right )}\right ) + 8 \, \cosh \left (x\right ) \sinh \left (x\right ) + 4 \, \sinh \left (x\right )^{2} - 3\right )}}{\cosh \left (x\right )^{4} + 4 \, \cosh \left (x\right ) \sinh \left (x\right )^{3} + \sinh \left (x\right )^{4} + 2 \,{\left (3 \, \cosh \left (x\right )^{2} - 1\right )} \sinh \left (x\right )^{2} - 2 \, \cosh \left (x\right )^{2} + 4 \,{\left (\cosh \left (x\right )^{3} - \cosh \left (x\right )\right )} \sinh \left (x\right ) + 1} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+coth(x))^3,x, algorithm="fricas")

[Out]

-2*(4*cosh(x)^2 - 2*(cosh(x)^4 + 4*cosh(x)*sinh(x)^3 + sinh(x)^4 + 2*(3*cosh(x)^2 - 1)*sinh(x)^2 - 2*cosh(x)^2
+ 4*(cosh(x)^3 - cosh(x))*sinh(x) + 1)*log(2*sinh(x)/(cosh(x) - sinh(x))) + 8*cosh(x)*sinh(x) + 4*sinh(x)^2 -
3)/(cosh(x)^4 + 4*cosh(x)*sinh(x)^3 + sinh(x)^4 + 2*(3*cosh(x)^2 - 1)*sinh(x)^2 - 2*cosh(x)^2 + 4*(cosh(x)^3
- cosh(x))*sinh(x) + 1)

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Sympy [A]  time = 1.17971, size = 31, normalized size = 1.35 \begin{align*} 8 x - 4 \log{\left (\tanh{\left (x \right )} + 1 \right )} + 4 \log{\left (\tanh{\left (x \right )} \right )} - \frac{3}{\tanh{\left (x \right )}} - \frac{1}{2 \tanh ^{2}{\left (x \right )}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+coth(x))**3,x)

[Out]

8*x - 4*log(tanh(x) + 1) + 4*log(tanh(x)) - 3/tanh(x) - 1/(2*tanh(x)**2)

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Giac [A]  time = 1.1699, size = 39, normalized size = 1.7 \begin{align*} -\frac{2 \,{\left (4 \, e^{\left (2 \, x\right )} - 3\right )}}{{\left (e^{\left (2 \, x\right )} - 1\right )}^{2}} + 4 \, \log \left ({\left | e^{\left (2 \, x\right )} - 1 \right |}\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+coth(x))^3,x, algorithm="giac")

[Out]

-2*(4*e^(2*x) - 3)/(e^(2*x) - 1)^2 + 4*log(abs(e^(2*x) - 1))