\(\int \frac {1}{5} (5-10 x+30 x^2-25 x^4+(40 x-40 x^3) \log (4)+(10-15 x^2) \log ^2(4)+e^{x/5} (-5-x-20 x^3-x^4+(-30 x^2-2 x^3) \log (4)+(-10 x-x^2) \log ^2(4))) \, dx\) [5791]

   Optimal result
   Rubi [B] (verified)
   Mathematica [B] (verified)
   Maple [B] (verified)
   Fricas [B] (verification not implemented)
   Sympy [B] (verification not implemented)
   Maxima [B] (verification not implemented)
   Giac [B] (verification not implemented)
   Mupad [B] (verification not implemented)

Optimal result

Integrand size = 94, antiderivative size = 30 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=5+x-x \left (e^{x/5}-\frac {2}{x}+x\right ) \left (1+x (x+\log (4))^2\right ) \]

[Out]

x-x*(x*(x+2*ln(2))^2+1)*(exp(1/5*x)-2/x+x)+5

Rubi [B] (verified)

Leaf count is larger than twice the leaf count of optimal. \(99\) vs. \(2(30)=60\).

Time = 0.19 (sec) , antiderivative size = 99, normalized size of antiderivative = 3.30, number of steps used = 34, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.043, Rules used = {12, 2227, 2225, 2207} \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=-x^5-e^{x/5} x^4-2 x^4 \log (4)+2 x^3-x^3 \log ^2(4)-2 e^{x/5} x^3 \log (4)-x^2-e^{x/5} x^2 \log ^2(4)+4 x^2 \log (4)-e^{x/5} x+x+2 x \log ^2(4) \]

[In]

Int[(5 - 10*x + 30*x^2 - 25*x^4 + (40*x - 40*x^3)*Log[4] + (10 - 15*x^2)*Log[4]^2 + E^(x/5)*(-5 - x - 20*x^3 -
 x^4 + (-30*x^2 - 2*x^3)*Log[4] + (-10*x - x^2)*Log[4]^2))/5,x]

[Out]

x - E^(x/5)*x - x^2 + 2*x^3 - E^(x/5)*x^4 - x^5 + 4*x^2*Log[4] - 2*E^(x/5)*x^3*Log[4] - 2*x^4*Log[4] + 2*x*Log
[4]^2 - E^(x/5)*x^2*Log[4]^2 - x^3*Log[4]^2

Rule 12

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

Rule 2207

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] &&  !TrueQ[$UseGamma]

Rule 2225

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

Rule 2227

Int[(F_)^((c_.)*(v_))*(u_), x_Symbol] :> Int[ExpandIntegrand[F^(c*ExpandToSum[v, x]), u, x], x] /; FreeQ[{F, c
}, x] && PolynomialQ[u, x] && LinearQ[v, x] &&  !TrueQ[$UseGamma]

Rubi steps \begin{align*} \text {integral}& = \frac {1}{5} \int \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx \\ & = x-x^2+2 x^3-x^5+\frac {1}{5} \int e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right ) \, dx+\frac {1}{5} \log (4) \int \left (40 x-40 x^3\right ) \, dx+\frac {1}{5} \log ^2(4) \int \left (10-15 x^2\right ) \, dx \\ & = x-x^2+2 x^3-x^5+4 x^2 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-x^3 \log ^2(4)+\frac {1}{5} \int \left (-5 e^{x/5}-e^{x/5} x-20 e^{x/5} x^3-e^{x/5} x^4-2 e^{x/5} x^2 (15+x) \log (4)-e^{x/5} x (10+x) \log ^2(4)\right ) \, dx \\ & = x-x^2+2 x^3-x^5+4 x^2 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-x^3 \log ^2(4)-\frac {1}{5} \int e^{x/5} x \, dx-\frac {1}{5} \int e^{x/5} x^4 \, dx-4 \int e^{x/5} x^3 \, dx-\frac {1}{5} (2 \log (4)) \int e^{x/5} x^2 (15+x) \, dx-\frac {1}{5} \log ^2(4) \int e^{x/5} x (10+x) \, dx-\int e^{x/5} \, dx \\ & = -5 e^{x/5}+x-e^{x/5} x-x^2+2 x^3-20 e^{x/5} x^3-e^{x/5} x^4-x^5+4 x^2 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-x^3 \log ^2(4)+4 \int e^{x/5} x^3 \, dx+60 \int e^{x/5} x^2 \, dx-\frac {1}{5} (2 \log (4)) \int \left (15 e^{x/5} x^2+e^{x/5} x^3\right ) \, dx-\frac {1}{5} \log ^2(4) \int \left (10 e^{x/5} x+e^{x/5} x^2\right ) \, dx+\int e^{x/5} \, dx \\ & = x-e^{x/5} x-x^2+300 e^{x/5} x^2+2 x^3-e^{x/5} x^4-x^5+4 x^2 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-x^3 \log ^2(4)-60 \int e^{x/5} x^2 \, dx-600 \int e^{x/5} x \, dx-\frac {1}{5} (2 \log (4)) \int e^{x/5} x^3 \, dx-(6 \log (4)) \int e^{x/5} x^2 \, dx-\frac {1}{5} \log ^2(4) \int e^{x/5} x^2 \, dx-\left (2 \log ^2(4)\right ) \int e^{x/5} x \, dx \\ & = x-3001 e^{x/5} x-x^2+2 x^3-e^{x/5} x^4-x^5+4 x^2 \log (4)-30 e^{x/5} x^2 \log (4)-2 e^{x/5} x^3 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-10 e^{x/5} x \log ^2(4)-e^{x/5} x^2 \log ^2(4)-x^3 \log ^2(4)+600 \int e^{x/5} x \, dx+3000 \int e^{x/5} \, dx+(6 \log (4)) \int e^{x/5} x^2 \, dx+(60 \log (4)) \int e^{x/5} x \, dx+\left (2 \log ^2(4)\right ) \int e^{x/5} x \, dx+\left (10 \log ^2(4)\right ) \int e^{x/5} \, dx \\ & = 15000 e^{x/5}+x-e^{x/5} x-x^2+2 x^3-e^{x/5} x^4-x^5+300 e^{x/5} x \log (4)+4 x^2 \log (4)-2 e^{x/5} x^3 \log (4)-2 x^4 \log (4)+50 e^{x/5} \log ^2(4)+2 x \log ^2(4)-e^{x/5} x^2 \log ^2(4)-x^3 \log ^2(4)-3000 \int e^{x/5} \, dx-(60 \log (4)) \int e^{x/5} x \, dx-(300 \log (4)) \int e^{x/5} \, dx-\left (10 \log ^2(4)\right ) \int e^{x/5} \, dx \\ & = x-e^{x/5} x-x^2+2 x^3-e^{x/5} x^4-x^5-1500 e^{x/5} \log (4)+4 x^2 \log (4)-2 e^{x/5} x^3 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-e^{x/5} x^2 \log ^2(4)-x^3 \log ^2(4)+(300 \log (4)) \int e^{x/5} \, dx \\ & = x-e^{x/5} x-x^2+2 x^3-e^{x/5} x^4-x^5+4 x^2 \log (4)-2 e^{x/5} x^3 \log (4)-2 x^4 \log (4)+2 x \log ^2(4)-e^{x/5} x^2 \log ^2(4)-x^3 \log ^2(4) \\ \end{align*}

Mathematica [B] (verified)

Leaf count is larger than twice the leaf count of optimal. \(69\) vs. \(2(30)=60\).

Time = 0.26 (sec) , antiderivative size = 69, normalized size of antiderivative = 2.30 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=x-x^5-2 x^4 \log (4)+2 x \log ^2(4)-x^3 \left (-2+\log ^2(4)\right )-e^{x/5} \left (x+x^4+2 x^3 \log (4)+x^2 \log ^2(4)\right )+x^2 (-1+\log (256)) \]

[In]

Integrate[(5 - 10*x + 30*x^2 - 25*x^4 + (40*x - 40*x^3)*Log[4] + (10 - 15*x^2)*Log[4]^2 + E^(x/5)*(-5 - x - 20
*x^3 - x^4 + (-30*x^2 - 2*x^3)*Log[4] + (-10*x - x^2)*Log[4]^2))/5,x]

[Out]

x - x^5 - 2*x^4*Log[4] + 2*x*Log[4]^2 - x^3*(-2 + Log[4]^2) - E^(x/5)*(x + x^4 + 2*x^3*Log[4] + x^2*Log[4]^2)
+ x^2*(-1 + Log[256])

Maple [B] (verified)

Leaf count of result is larger than twice the leaf count of optimal. \(82\) vs. \(2(29)=58\).

Time = 0.18 (sec) , antiderivative size = 83, normalized size of antiderivative = 2.77

method result size
risch \(\frac {\left (-20 x^{2} \ln \left (2\right )^{2}-20 x^{3} \ln \left (2\right )-5 x^{4}-5 x \right ) {\mathrm e}^{\frac {x}{5}}}{5}-4 x^{3} \ln \left (2\right )^{2}+8 x \ln \left (2\right )^{2}-4 x^{4} \ln \left (2\right )+8 x^{2} \ln \left (2\right )-4 \ln \left (2\right )-x^{5}+2 x^{3}-x^{2}+x\) \(83\)
norman \(\left (2-4 \ln \left (2\right )^{2}\right ) x^{3}+\left (8 \ln \left (2\right )^{2}+1\right ) x +\left (8 \ln \left (2\right )-1\right ) x^{2}-x^{5}-x \,{\mathrm e}^{\frac {x}{5}}-x^{4} {\mathrm e}^{\frac {x}{5}}-4 x^{4} \ln \left (2\right )-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right ) x^{3}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right )^{2} x^{2}\) \(86\)
derivativedivides \(x -x \,{\mathrm e}^{\frac {x}{5}}-x^{4} {\mathrm e}^{\frac {x}{5}}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right ) x^{3}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right )^{2} x^{2}-x^{2}+2 x^{3}-x^{5}+20 \ln \left (2\right )^{2} \left (-\frac {1}{5} x^{3}+\frac {2}{5} x \right )-4 x^{4} \ln \left (2\right )+8 x^{2} \ln \left (2\right )\) \(87\)
default \(x -x^{4} {\mathrm e}^{\frac {x}{5}}-x \,{\mathrm e}^{\frac {x}{5}}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right )^{2} x^{2}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right ) x^{3}-x^{2}+2 x^{3}-x^{5}+4 \ln \left (2\right )^{2} \left (-x^{3}+2 x \right )-4 x^{4} \ln \left (2\right )+8 x^{2} \ln \left (2\right )\) \(87\)
parallelrisch \(8 x \ln \left (2\right )^{2}+8 x^{2} \ln \left (2\right )-x^{2}-4 x^{3} \ln \left (2\right )^{2}+2 x^{3}-4 x^{4} \ln \left (2\right )-x^{5}-x^{4} {\mathrm e}^{\frac {x}{5}}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right )^{2} x^{2}-x \,{\mathrm e}^{\frac {x}{5}}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right ) x^{3}+x\) \(88\)
parts \(8 x \ln \left (2\right )^{2}+8 x^{2} \ln \left (2\right )-x^{2}-4 x^{3} \ln \left (2\right )^{2}+2 x^{3}-4 x^{4} \ln \left (2\right )-x^{5}-x^{4} {\mathrm e}^{\frac {x}{5}}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right )^{2} x^{2}-x \,{\mathrm e}^{\frac {x}{5}}-4 \,{\mathrm e}^{\frac {x}{5}} \ln \left (2\right ) x^{3}+x\) \(88\)

[In]

int(1/5*(4*(-x^2-10*x)*ln(2)^2+2*(-2*x^3-30*x^2)*ln(2)-x^4-20*x^3-x-5)*exp(1/5*x)+4/5*(-15*x^2+10)*ln(2)^2+2/5
*(-40*x^3+40*x)*ln(2)-5*x^4+6*x^2-2*x+1,x,method=_RETURNVERBOSE)

[Out]

1/5*(-20*x^2*ln(2)^2-20*x^3*ln(2)-5*x^4-5*x)*exp(1/5*x)-4*x^3*ln(2)^2+8*x*ln(2)^2-4*x^4*ln(2)+8*x^2*ln(2)-4*ln
(2)-x^5+2*x^3-x^2+x

Fricas [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 70 vs. \(2 (29) = 58\).

Time = 0.24 (sec) , antiderivative size = 70, normalized size of antiderivative = 2.33 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=-x^{5} + 2 \, x^{3} - 4 \, {\left (x^{3} - 2 \, x\right )} \log \left (2\right )^{2} - x^{2} - {\left (x^{4} + 4 \, x^{3} \log \left (2\right ) + 4 \, x^{2} \log \left (2\right )^{2} + x\right )} e^{\left (\frac {1}{5} \, x\right )} - 4 \, {\left (x^{4} - 2 \, x^{2}\right )} \log \left (2\right ) + x \]

[In]

integrate(1/5*(4*(-x^2-10*x)*log(2)^2+2*(-2*x^3-30*x^2)*log(2)-x^4-20*x^3-x-5)*exp(1/5*x)+4/5*(-15*x^2+10)*log
(2)^2+2/5*(-40*x^3+40*x)*log(2)-5*x^4+6*x^2-2*x+1,x, algorithm="fricas")

[Out]

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

Sympy [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 73 vs. \(2 (26) = 52\).

Time = 0.11 (sec) , antiderivative size = 73, normalized size of antiderivative = 2.43 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=- x^{5} - 4 x^{4} \log {\left (2 \right )} + x^{3} \cdot \left (2 - 4 \log {\left (2 \right )}^{2}\right ) + x^{2} \left (-1 + 8 \log {\left (2 \right )}\right ) + x \left (1 + 8 \log {\left (2 \right )}^{2}\right ) + \left (- x^{4} - 4 x^{3} \log {\left (2 \right )} - 4 x^{2} \log {\left (2 \right )}^{2} - x\right ) e^{\frac {x}{5}} \]

[In]

integrate(1/5*(4*(-x**2-10*x)*ln(2)**2+2*(-2*x**3-30*x**2)*ln(2)-x**4-20*x**3-x-5)*exp(1/5*x)+4/5*(-15*x**2+10
)*ln(2)**2+2/5*(-40*x**3+40*x)*ln(2)-5*x**4+6*x**2-2*x+1,x)

[Out]

-x**5 - 4*x**4*log(2) + x**3*(2 - 4*log(2)**2) + x**2*(-1 + 8*log(2)) + x*(1 + 8*log(2)**2) + (-x**4 - 4*x**3*
log(2) - 4*x**2*log(2)**2 - x)*exp(x/5)

Maxima [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 70 vs. \(2 (29) = 58\).

Time = 0.26 (sec) , antiderivative size = 70, normalized size of antiderivative = 2.33 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=-x^{5} + 2 \, x^{3} - 4 \, {\left (x^{3} - 2 \, x\right )} \log \left (2\right )^{2} - x^{2} - {\left (x^{4} + 4 \, x^{3} \log \left (2\right ) + 4 \, x^{2} \log \left (2\right )^{2} + x\right )} e^{\left (\frac {1}{5} \, x\right )} - 4 \, {\left (x^{4} - 2 \, x^{2}\right )} \log \left (2\right ) + x \]

[In]

integrate(1/5*(4*(-x^2-10*x)*log(2)^2+2*(-2*x^3-30*x^2)*log(2)-x^4-20*x^3-x-5)*exp(1/5*x)+4/5*(-15*x^2+10)*log
(2)^2+2/5*(-40*x^3+40*x)*log(2)-5*x^4+6*x^2-2*x+1,x, algorithm="maxima")

[Out]

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

Giac [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 70 vs. \(2 (29) = 58\).

Time = 0.26 (sec) , antiderivative size = 70, normalized size of antiderivative = 2.33 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=-x^{5} + 2 \, x^{3} - 4 \, {\left (x^{3} - 2 \, x\right )} \log \left (2\right )^{2} - x^{2} - {\left (x^{4} + 4 \, x^{3} \log \left (2\right ) + 4 \, x^{2} \log \left (2\right )^{2} + x\right )} e^{\left (\frac {1}{5} \, x\right )} - 4 \, {\left (x^{4} - 2 \, x^{2}\right )} \log \left (2\right ) + x \]

[In]

integrate(1/5*(4*(-x^2-10*x)*log(2)^2+2*(-2*x^3-30*x^2)*log(2)-x^4-20*x^3-x-5)*exp(1/5*x)+4/5*(-15*x^2+10)*log
(2)^2+2/5*(-40*x^3+40*x)*log(2)-5*x^4+6*x^2-2*x+1,x, algorithm="giac")

[Out]

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

Mupad [B] (verification not implemented)

Time = 12.76 (sec) , antiderivative size = 86, normalized size of antiderivative = 2.87 \[ \int \frac {1}{5} \left (5-10 x+30 x^2-25 x^4+\left (40 x-40 x^3\right ) \log (4)+\left (10-15 x^2\right ) \log ^2(4)+e^{x/5} \left (-5-x-20 x^3-x^4+\left (-30 x^2-2 x^3\right ) \log (4)+\left (-10 x-x^2\right ) \log ^2(4)\right )\right ) \, dx=x\,\left (8\,{\ln \left (2\right )}^2+1\right )-x\,{\mathrm {e}}^{x/5}+x^2\,\left (8\,\ln \left (2\right )-1\right )-x^4\,{\mathrm {e}}^{x/5}-4\,x^4\,\ln \left (2\right )-x^3\,\left (4\,{\ln \left (2\right )}^2-2\right )-x^5-4\,x^2\,{\mathrm {e}}^{x/5}\,{\ln \left (2\right )}^2-4\,x^3\,{\mathrm {e}}^{x/5}\,\ln \left (2\right ) \]

[In]

int((2*log(2)*(40*x - 40*x^3))/5 - 2*x - (exp(x/5)*(x + 4*log(2)^2*(10*x + x^2) + 2*log(2)*(30*x^2 + 2*x^3) +
20*x^3 + x^4 + 5))/5 - (4*log(2)^2*(15*x^2 - 10))/5 + 6*x^2 - 5*x^4 + 1,x)

[Out]

x*(8*log(2)^2 + 1) - x*exp(x/5) + x^2*(8*log(2) - 1) - x^4*exp(x/5) - 4*x^4*log(2) - x^3*(4*log(2)^2 - 2) - x^
5 - 4*x^2*exp(x/5)*log(2)^2 - 4*x^3*exp(x/5)*log(2)