3.186 \(\int \frac{\cosh (x)}{(1-i \sinh (x))^3} \, dx\)

Optimal. Leaf size=16 \[ -\frac{i}{2 (1-i \sinh (x))^2} \]

[Out]

(-I/2)/(1 - I*Sinh[x])^2

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Rubi [A]  time = 0.021534, antiderivative size = 16, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.154, Rules used = {2667, 32} \[ -\frac{i}{2 (1-i \sinh (x))^2} \]

Antiderivative was successfully verified.

[In]

Int[Cosh[x]/(1 - I*Sinh[x])^3,x]

[Out]

(-I/2)/(1 - I*Sinh[x])^2

Rule 2667

Int[cos[(e_.) + (f_.)*(x_)]^(p_.)*((a_) + (b_.)*sin[(e_.) + (f_.)*(x_)])^(m_.), x_Symbol] :> Dist[1/(b^p*f), S
ubst[Int[(a + x)^(m + (p - 1)/2)*(a - x)^((p - 1)/2), x], x, b*Sin[e + f*x]], x] /; FreeQ[{a, b, e, f, m}, x]
&& IntegerQ[(p - 1)/2] && EqQ[a^2 - b^2, 0] && (GeQ[p, -1] ||  !IntegerQ[m + 1/2])

Rule 32

Int[((a_.) + (b_.)*(x_))^(m_), x_Symbol] :> Simp[(a + b*x)^(m + 1)/(b*(m + 1)), x] /; FreeQ[{a, b, m}, x] && N
eQ[m, -1]

Rubi steps

\begin{align*} \int \frac{\cosh (x)}{(1-i \sinh (x))^3} \, dx &=i \operatorname{Subst}\left (\int \frac{1}{(1+x)^3} \, dx,x,-i \sinh (x)\right )\\ &=-\frac{i}{2 (1-i \sinh (x))^2}\\ \end{align*}

Mathematica [A]  time = 0.0272961, size = 14, normalized size = 0.88 \[ \frac{i}{2 (\sinh (x)+i)^2} \]

Antiderivative was successfully verified.

[In]

Integrate[Cosh[x]/(1 - I*Sinh[x])^3,x]

[Out]

(I/2)/(I + Sinh[x])^2

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Maple [A]  time = 0.017, size = 13, normalized size = 0.8 \begin{align*}{\frac{-{\frac{i}{2}}}{ \left ( 1-i\sinh \left ( x \right ) \right ) ^{2}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cosh(x)/(1-I*sinh(x))^3,x)

[Out]

-1/2*I/(1-I*sinh(x))^2

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Maxima [A]  time = 1.21702, size = 14, normalized size = 0.88 \begin{align*} -\frac{i}{2 \,{\left (-i \, \sinh \left (x\right ) + 1\right )}^{2}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(x)/(1-I*sinh(x))^3,x, algorithm="maxima")

[Out]

-1/2*I/(-I*sinh(x) + 1)^2

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Fricas [B]  time = 1.75141, size = 85, normalized size = 5.31 \begin{align*} \frac{2 i \, e^{\left (2 \, x\right )}}{e^{\left (4 \, x\right )} + 4 i \, e^{\left (3 \, x\right )} - 6 \, e^{\left (2 \, x\right )} - 4 i \, e^{x} + 1} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(x)/(1-I*sinh(x))^3,x, algorithm="fricas")

[Out]

2*I*e^(2*x)/(e^(4*x) + 4*I*e^(3*x) - 6*e^(2*x) - 4*I*e^x + 1)

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Sympy [B]  time = 0.385706, size = 36, normalized size = 2.25 \begin{align*} \frac{2 i e^{2 x}}{e^{4 x} + 4 i e^{3 x} - 6 e^{2 x} - 4 i e^{x} + 1} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(x)/(1-I*sinh(x))**3,x)

[Out]

2*I*exp(2*x)/(exp(4*x) + 4*I*exp(3*x) - 6*exp(2*x) - 4*I*exp(x) + 1)

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Giac [A]  time = 1.21441, size = 16, normalized size = 1. \begin{align*} \frac{2 i \, e^{\left (2 \, x\right )}}{{\left (e^{x} + i\right )}^{4}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(x)/(1-I*sinh(x))^3,x, algorithm="giac")

[Out]

2*I*e^(2*x)/(e^x + I)^4