3.96 \(\int \frac{A+B \cosh (x)}{(1+\cosh (x))^4} \, dx\)

Optimal. Leaf size=75 \[ \frac{2 (3 A+4 B) \sinh (x)}{105 (\cosh (x)+1)}+\frac{2 (3 A+4 B) \sinh (x)}{105 (\cosh (x)+1)^2}+\frac{(3 A+4 B) \sinh (x)}{35 (\cosh (x)+1)^3}+\frac{(A-B) \sinh (x)}{7 (\cosh (x)+1)^4} \]

[Out]

((A - B)*Sinh[x])/(7*(1 + Cosh[x])^4) + ((3*A + 4*B)*Sinh[x])/(35*(1 + Cosh[x])^3) + (2*(3*A + 4*B)*Sinh[x])/(
105*(1 + Cosh[x])^2) + (2*(3*A + 4*B)*Sinh[x])/(105*(1 + Cosh[x]))

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Rubi [A]  time = 0.0594869, antiderivative size = 75, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.231, Rules used = {2750, 2650, 2648} \[ \frac{2 (3 A+4 B) \sinh (x)}{105 (\cosh (x)+1)}+\frac{2 (3 A+4 B) \sinh (x)}{105 (\cosh (x)+1)^2}+\frac{(3 A+4 B) \sinh (x)}{35 (\cosh (x)+1)^3}+\frac{(A-B) \sinh (x)}{7 (\cosh (x)+1)^4} \]

Antiderivative was successfully verified.

[In]

Int[(A + B*Cosh[x])/(1 + Cosh[x])^4,x]

[Out]

((A - B)*Sinh[x])/(7*(1 + Cosh[x])^4) + ((3*A + 4*B)*Sinh[x])/(35*(1 + Cosh[x])^3) + (2*(3*A + 4*B)*Sinh[x])/(
105*(1 + Cosh[x])^2) + (2*(3*A + 4*B)*Sinh[x])/(105*(1 + Cosh[x]))

Rule 2750

Int[((a_) + (b_.)*sin[(e_.) + (f_.)*(x_)])^(m_)*((c_.) + (d_.)*sin[(e_.) + (f_.)*(x_)]), x_Symbol] :> Simp[((b
*c - a*d)*Cos[e + f*x]*(a + b*Sin[e + f*x])^m)/(a*f*(2*m + 1)), x] + Dist[(a*d*m + b*c*(m + 1))/(a*b*(2*m + 1)
), Int[(a + b*Sin[e + f*x])^(m + 1), x], x] /; FreeQ[{a, b, c, d, e, f}, x] && NeQ[b*c - a*d, 0] && EqQ[a^2 -
b^2, 0] && LtQ[m, -2^(-1)]

Rule 2650

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

Rule 2648

Int[((a_) + (b_.)*sin[(c_.) + (d_.)*(x_)])^(-1), x_Symbol] :> -Simp[Cos[c + d*x]/(d*(b + a*Sin[c + d*x])), x]
/; FreeQ[{a, b, c, d}, x] && EqQ[a^2 - b^2, 0]

Rubi steps

\begin{align*} \int \frac{A+B \cosh (x)}{(1+\cosh (x))^4} \, dx &=\frac{(A-B) \sinh (x)}{7 (1+\cosh (x))^4}+\frac{1}{7} (3 A+4 B) \int \frac{1}{(1+\cosh (x))^3} \, dx\\ &=\frac{(A-B) \sinh (x)}{7 (1+\cosh (x))^4}+\frac{(3 A+4 B) \sinh (x)}{35 (1+\cosh (x))^3}+\frac{1}{35} (2 (3 A+4 B)) \int \frac{1}{(1+\cosh (x))^2} \, dx\\ &=\frac{(A-B) \sinh (x)}{7 (1+\cosh (x))^4}+\frac{(3 A+4 B) \sinh (x)}{35 (1+\cosh (x))^3}+\frac{2 (3 A+4 B) \sinh (x)}{105 (1+\cosh (x))^2}+\frac{1}{105} (2 (3 A+4 B)) \int \frac{1}{1+\cosh (x)} \, dx\\ &=\frac{(A-B) \sinh (x)}{7 (1+\cosh (x))^4}+\frac{(3 A+4 B) \sinh (x)}{35 (1+\cosh (x))^3}+\frac{2 (3 A+4 B) \sinh (x)}{105 (1+\cosh (x))^2}+\frac{2 (3 A+4 B) \sinh (x)}{105 (1+\cosh (x))}\\ \end{align*}

Mathematica [A]  time = 0.0918554, size = 57, normalized size = 0.76 \[ \frac{\sinh (x) (29 (3 A+4 B) \cosh (x)+8 (3 A+4 B) \cosh (2 x)+3 A \cosh (3 x)+96 A+4 B \cosh (3 x)+58 B)}{210 (\cosh (x)+1)^4} \]

Antiderivative was successfully verified.

[In]

Integrate[(A + B*Cosh[x])/(1 + Cosh[x])^4,x]

[Out]

((96*A + 58*B + 29*(3*A + 4*B)*Cosh[x] + 8*(3*A + 4*B)*Cosh[2*x] + 3*A*Cosh[3*x] + 4*B*Cosh[3*x])*Sinh[x])/(21
0*(1 + Cosh[x])^4)

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Maple [A]  time = 0.009, size = 55, normalized size = 0.7 \begin{align*} -{\frac{A-B}{56} \left ( \tanh \left ({\frac{x}{2}} \right ) \right ) ^{7}}-{\frac{-3\,A+B}{40} \left ( \tanh \left ({\frac{x}{2}} \right ) \right ) ^{5}}-{\frac{3\,A+B}{24} \left ( \tanh \left ({\frac{x}{2}} \right ) \right ) ^{3}}+{\frac{A}{8}\tanh \left ({\frac{x}{2}} \right ) }+{\frac{B}{8}\tanh \left ({\frac{x}{2}} \right ) } \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((A+B*cosh(x))/(1+cosh(x))^4,x)

[Out]

-1/56*(A-B)*tanh(1/2*x)^7-1/40*(-3*A+B)*tanh(1/2*x)^5-1/24*(3*A+B)*tanh(1/2*x)^3+1/8*A*tanh(1/2*x)+1/8*B*tanh(
1/2*x)

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Maxima [B]  time = 1.0755, size = 606, normalized size = 8.08 \begin{align*} \text{result too large to display} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*cosh(x))/(1+cosh(x))^4,x, algorithm="maxima")

[Out]

8/105*B*(14*e^(-x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) +
1) + 42*e^(-2*x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) +
1) + 35*e^(-3*x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1
) + 35*e^(-4*x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1)
+ 2/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1)) + 4/35*A*
(7*e^(-x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1) + 21*
e^(-2*x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1) + 35*e
^(-3*x)/(7*e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1) + 1/(7*
e^(-x) + 21*e^(-2*x) + 35*e^(-3*x) + 35*e^(-4*x) + 21*e^(-5*x) + 7*e^(-6*x) + e^(-7*x) + 1))

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Fricas [B]  time = 2.09743, size = 586, normalized size = 7.81 \begin{align*} -\frac{4 \,{\left ({\left (3 \, A + 74 \, B\right )} \cosh \left (x\right )^{2} +{\left (3 \, A + 74 \, B\right )} \sinh \left (x\right )^{2} + 14 \,{\left (9 \, A + 7 \, B\right )} \cosh \left (x\right ) - 6 \,{\left ({\left (A - 22 \, B\right )} \cosh \left (x\right ) - 14 \, A - 7 \, B\right )} \sinh \left (x\right ) + 63 \, A + 84 \, B\right )}}{105 \,{\left (\cosh \left (x\right )^{5} +{\left (5 \, \cosh \left (x\right ) + 7\right )} \sinh \left (x\right )^{4} + \sinh \left (x\right )^{5} + 7 \, \cosh \left (x\right )^{4} +{\left (10 \, \cosh \left (x\right )^{2} + 28 \, \cosh \left (x\right ) + 21\right )} \sinh \left (x\right )^{3} + 21 \, \cosh \left (x\right )^{3} +{\left (10 \, \cosh \left (x\right )^{3} + 42 \, \cosh \left (x\right )^{2} + 63 \, \cosh \left (x\right ) + 36\right )} \sinh \left (x\right )^{2} + 36 \, \cosh \left (x\right )^{2} +{\left (5 \, \cosh \left (x\right )^{4} + 28 \, \cosh \left (x\right )^{3} + 63 \, \cosh \left (x\right )^{2} + 68 \, \cosh \left (x\right ) + 28\right )} \sinh \left (x\right ) + 42 \, \cosh \left (x\right ) + 21\right )}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*cosh(x))/(1+cosh(x))^4,x, algorithm="fricas")

[Out]

-4/105*((3*A + 74*B)*cosh(x)^2 + (3*A + 74*B)*sinh(x)^2 + 14*(9*A + 7*B)*cosh(x) - 6*((A - 22*B)*cosh(x) - 14*
A - 7*B)*sinh(x) + 63*A + 84*B)/(cosh(x)^5 + (5*cosh(x) + 7)*sinh(x)^4 + sinh(x)^5 + 7*cosh(x)^4 + (10*cosh(x)
^2 + 28*cosh(x) + 21)*sinh(x)^3 + 21*cosh(x)^3 + (10*cosh(x)^3 + 42*cosh(x)^2 + 63*cosh(x) + 36)*sinh(x)^2 + 3
6*cosh(x)^2 + (5*cosh(x)^4 + 28*cosh(x)^3 + 63*cosh(x)^2 + 68*cosh(x) + 28)*sinh(x) + 42*cosh(x) + 21)

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Sympy [A]  time = 4.36389, size = 78, normalized size = 1.04 \begin{align*} - \frac{A \tanh ^{7}{\left (\frac{x}{2} \right )}}{56} + \frac{3 A \tanh ^{5}{\left (\frac{x}{2} \right )}}{40} - \frac{A \tanh ^{3}{\left (\frac{x}{2} \right )}}{8} + \frac{A \tanh{\left (\frac{x}{2} \right )}}{8} + \frac{B \tanh ^{7}{\left (\frac{x}{2} \right )}}{56} - \frac{B \tanh ^{5}{\left (\frac{x}{2} \right )}}{40} - \frac{B \tanh ^{3}{\left (\frac{x}{2} \right )}}{24} + \frac{B \tanh{\left (\frac{x}{2} \right )}}{8} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*cosh(x))/(1+cosh(x))**4,x)

[Out]

-A*tanh(x/2)**7/56 + 3*A*tanh(x/2)**5/40 - A*tanh(x/2)**3/8 + A*tanh(x/2)/8 + B*tanh(x/2)**7/56 - B*tanh(x/2)*
*5/40 - B*tanh(x/2)**3/24 + B*tanh(x/2)/8

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Giac [A]  time = 1.19734, size = 81, normalized size = 1.08 \begin{align*} -\frac{4 \,{\left (70 \, B e^{\left (4 \, x\right )} + 105 \, A e^{\left (3 \, x\right )} + 70 \, B e^{\left (3 \, x\right )} + 63 \, A e^{\left (2 \, x\right )} + 84 \, B e^{\left (2 \, x\right )} + 21 \, A e^{x} + 28 \, B e^{x} + 3 \, A + 4 \, B\right )}}{105 \,{\left (e^{x} + 1\right )}^{7}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*cosh(x))/(1+cosh(x))^4,x, algorithm="giac")

[Out]

-4/105*(70*B*e^(4*x) + 105*A*e^(3*x) + 70*B*e^(3*x) + 63*A*e^(2*x) + 84*B*e^(2*x) + 21*A*e^x + 28*B*e^x + 3*A
+ 4*B)/(e^x + 1)^7