∫ 1_ 10e−136−x(1 − 2 log(4) + (1 − x) log(x)) dx

Optimal. Leaf size=21 \[ \frac {1}{5} e^{-136-x} \left (\log (4)+\frac {1}{2} x \log (x)\right ) \]

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Rubi [B] time = 0.10, antiderivative size = 60, normalized size of antiderivative = 2.86, number of steps used = 6, number of rules used = 5, integrand size = 25, $\frac {\text {number of rules}}{\text {integrand size}}$ = 0.200, Rules used = {12, 6742, 2194, 2176, 2554} \begin {gather*} \frac {e^{-x-136}}{10}+\frac {1}{10} e^{-x-136} \log (x)-\frac {1}{10} e^{-x-136} (1-x) \log (x)-\frac {1}{10} e^{-x-136} (1-\log (16)) \end {gather*}

Int[(E^(-136 - x)*(1 - 2*Log[4] + (1 - x)*Log[x]))/10,x]

E^(-136 - x)/10 - (E^(-136 - x)*(1 - Log[16]))/10 + (E^(-136 - x)*Log[x])/10 - (E^(-136 - x)*(1 - x)*Log[x])/1

Int[(a_)*(u_), x_Symbol] :> Dist[a, Int[u, x], x] /; FreeQ[a, x] && !MatchQ[u, (b_)*(v_) /; FreeQ[b, x]]

Int[((b_.)*(F_)^((g_.)*((e_.) + (f_.)*(x_))))^(n_.)*((c_.) + (d_.)*(x_))^(m_.), x_Symbol] :> Simp[((c + d*x)^m

*(b*F^(g*(e + f*x)))^n)/(f*g*n*Log[F]), x] - Dist[(d*m)/(f*g*n*Log[F]), Int[(c + d*x)^(m - 1)*(b*F^(g*(e + f*x

)))^n, x], x] /; FreeQ[{F, b, c, d, e, f, g, n}, x] && GtQ[m, 0] && IntegerQ[2*m] && !$UseGamma === True

Int[((F_)^((c_.)*((a_.) + (b_.)*(x_))))^(n_.), x_Symbol] :> Simp[(F^(c*(a + b*x)))^n/(b*c*n*Log[F]), x] /; Fre

Int[Log[u_]*(v_), x_Symbol] :> With[{w = IntHide[v, x]}, Dist[Log[u], w, x] - Int[SimplifyIntegrand[(w*D[u, x]

)/u, x], x] /; InverseFunctionFreeQ[w, x]] /; InverseFunctionFreeQ[u, x]

Int[u_, x_Symbol] :> With[{v = ExpandIntegrand[u, x]}, Int[v, x] /; SumQ[v]]

\begin {gather*} \begin {aligned} \text {integral} &=\frac {1}{10} \int e^{-136-x} (1-2 \log (4)+(1-x) \log (x)) \, dx\\ &=\frac {1}{10} \int \left (e^{-136-x} (1-2 \log (4))-e^{-136-x} (-1+x) \log (x)\right ) \, dx\\ &=-\left (\frac {1}{10} \int e^{-136-x} (-1+x) \log (x) \, dx\right )+\frac {1}{10} (1-2 \log (4)) \int e^{-136-x} \, dx\\ &=-\frac {1}{10} e^{-136-x} (1-\log (16))+\frac {1}{10} e^{-136-x} \log (x)-\frac {1}{10} e^{-136-x} (1-x) \log (x)-\frac {1}{10} \int e^{-136-x} \, dx\\ &=\frac {e^{-136-x}}{10}-\frac {1}{10} e^{-136-x} (1-\log (16))+\frac {1}{10} e^{-136-x} \log (x)-\frac {1}{10} e^{-136-x} (1-x) \log (x)\\ \end {aligned} \end {gather*}

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Mathematica [A] time = 0.05, size = 18, normalized size = 0.86 \begin {gather*} \frac {1}{10} e^{-136-x} (\log (16)+x \log (x)) \end {gather*}

Integrate[(E^(-136 - x)*(1 - 2*Log[4] + (1 - x)*Log[x]))/10,x]

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fricas [A] time = 1.64, size = 22, normalized size = 1.05 \begin {gather*} \frac {1}{10} \, x e^{\left (-x - 136\right )} \log \relax (x) + \frac {2}{5} \, e^{\left (-x - 136\right )} \log \relax (2) \end {gather*}

integrate(1/10*((-x+1)*log(x)-4*log(2)+1)/exp(x+136),x, algorithm="fricas")

1/10*x*e^(-x - 136)*log(x) + 2/5*e^(-x - 136)*log(2)

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giac [A] time = 1.04, size = 21, normalized size = 1.00 \begin {gather*} \frac {1}{10} \, {\left (x e^{\left (-x\right )} \log \relax (x) + 4 \, e^{\left (-x\right )} \log \relax (2)\right )} e^{\left (-136\right )} \end {gather*}

integrate(1/10*((-x+1)*log(x)-4*log(2)+1)/exp(x+136),x, algorithm="giac")

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method	result	size

norman	$\left (\frac {x \ln \relax (x )}{10}+\frac {2 \ln \relax (2)}{5}\right ) {\mathrm e}^{-x -136}$	$18$
risch	$\frac {x \,{\mathrm e}^{-x -136} \ln \relax (x )}{10}+\frac {2 \,{\mathrm e}^{-x -136} \ln \relax (2)}{5}$	$23$

int(1/10*((1-x)*ln(x)-4*ln(2)+1)/exp(x+136),x,method=_RETURNVERBOSE)

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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \frac {1}{10} \, {\left (x + 1\right )} e^{\left (-x - 136\right )} \log \relax (x) + \frac {1}{10} \, {\rm Ei}\left (-x\right ) e^{\left (-136\right )} + \frac {2}{5} \, e^{\left (-x - 136\right )} \log \relax (2) - \frac {1}{10} \, e^{\left (-x - 136\right )} \log \relax (x) - \frac {1}{10} \, e^{\left (-x - 136\right )} - \frac {1}{10} \, \int \frac {{\left (x + 1\right )} e^{\left (-x - 136\right )}}{x}\,{d x} \end {gather*}

integrate(1/10*((-x+1)*log(x)-4*log(2)+1)/exp(x+136),x, algorithm="maxima")

1/10*(x + 1)*e^(-x - 136)*log(x) + 1/10*Ei(-x)*e^(-136) + 2/5*e^(-x - 136)*log(2) - 1/10*e^(-x - 136)*log(x) -

1/10*e^(-x - 136) - 1/10*integrate((x + 1)*e^(-x - 136)/x, x)

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mupad [B] time = 7.41, size = 17, normalized size = 0.81 \begin {gather*} {\mathrm {e}}^{-x-136}\,\left (\frac {\ln \left (16\right )}{10}+\frac {x\,\ln \relax (x)}{10}\right ) \end {gather*}

int(-exp(- x - 136)*((2*log(2))/5 + (log(x)*(x - 1))/10 - 1/10),x)

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sympy [A] time = 0.34, size = 17, normalized size = 0.81 \begin {gather*} \frac {\left (x \log {\relax (x )} + 4 \log {\relax (2 )}\right ) e^{- x - 136}}{10} \end {gather*}

integrate(1/10*((-x+1)*ln(x)-4*ln(2)+1)/exp(x+136),x)

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3.100.46 \(\int \frac {1}{10} e^{-136-x} (1-2 \log (4)+(1-x) \log (x)) \, dx\)