3.218 \(\int \frac{e^{-x} (-1+(1-x) \log (x))}{\log ^2(x)} \, dx\)

Optimal. Leaf size=11 \[ \frac{e^{-x} x}{\log (x)} \]

[Out]

x/(E^x*Log[x])

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Rubi [A]  time = 0.0245364, antiderivative size = 11, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 20, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.05, Rules used = {2201} \[ \frac{e^{-x} x}{\log (x)} \]

Antiderivative was successfully verified.

[In]

Int[(-1 + (1 - x)*Log[x])/(E^x*Log[x]^2),x]

[Out]

x/(E^x*Log[x])

Rule 2201

Int[Log[(d_.)*(x_)]^(n_.)*(F_)^((c_.)*((a_.) + (b_.)*(x_)))*((e_) + Log[(d_.)*(x_)]*(h_.)*((f_.) + (g_.)*(x_))
), x_Symbol] :> Simp[(e*x*F^(c*(a + b*x))*Log[d*x]^(n + 1))/(n + 1), x] /; FreeQ[{F, a, b, c, d, e, f, g, h, n
}, x] && EqQ[e - f*h*(n + 1), 0] && EqQ[g*h*(n + 1) - b*c*e*Log[F], 0] && NeQ[n, -1]

Rubi steps

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

Mathematica [A]  time = 0.0078425, size = 11, normalized size = 1. \[ \frac{e^{-x} x}{\log (x)} \]

Antiderivative was successfully verified.

[In]

Integrate[(-1 + (1 - x)*Log[x])/(E^x*Log[x]^2),x]

[Out]

x/(E^x*Log[x])

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Maple [A]  time = 0.013, size = 11, normalized size = 1. \begin{align*}{\frac{x}{{{\rm e}^{x}}\ln \left ( x \right ) }} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((-1+(1-x)*ln(x))/exp(x)/ln(x)^2,x)

[Out]

x/exp(x)/ln(x)

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Maxima [A]  time = 1.08985, size = 14, normalized size = 1.27 \begin{align*} \frac{x e^{\left (-x\right )}}{\log \left (x\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-1+(1-x)*log(x))/exp(x)/log(x)^2,x, algorithm="maxima")

[Out]

x*e^(-x)/log(x)

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Fricas [A]  time = 1.57698, size = 23, normalized size = 2.09 \begin{align*} \frac{x e^{\left (-x\right )}}{\log \left (x\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-1+(1-x)*log(x))/exp(x)/log(x)^2,x, algorithm="fricas")

[Out]

x*e^(-x)/log(x)

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Sympy [A]  time = 0.283352, size = 7, normalized size = 0.64 \begin{align*} \frac{x e^{- x}}{\log{\left (x \right )}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-1+(1-x)*ln(x))/exp(x)/ln(x)**2,x)

[Out]

x*exp(-x)/log(x)

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Giac [A]  time = 1.07873, size = 14, normalized size = 1.27 \begin{align*} \frac{x e^{\left (-x\right )}}{\log \left (x\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-1+(1-x)*log(x))/exp(x)/log(x)^2,x, algorithm="giac")

[Out]

x*e^(-x)/log(x)