\(\int \frac {18-36 x+e^{x^2} (-18-36 x^2)}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+(-243-54 x+51 x^2+6 x^3-3 x^4) \log (4)+(-27-3 x+3 x^2) \log ^2(4)-\log ^3(4)+e^{2 x^2} (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4))+e^{x^2} (243 x+54 x^2-51 x^3-6 x^4+3 x^5+(54 x+6 x^2-6 x^3) \log (4)+3 x \log ^2(4))} \, dx\) [873]

Optimal result

Integrand size = 189, antiderivative size = 27 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9}{x^2 \left (-e^{x^2}-x+\frac {9+x+\log (4)}{x}\right )^2} \] Output:

9/((2*ln(2)+x+9)/x-exp(x^2)-x)^2/x^2
 

Mathematica [A] (verified)

Time = 0.03 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.81 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9}{\left (-9+\left (-1+e^{x^2}\right ) x+x^2-\log (4)\right )^2} \] Input:

Integrate[(18 - 36*x + E^x^2*(-18 - 36*x^2))/(-729 - 243*x + 216*x^2 + 53* 
x^3 + E^(3*x^2)*x^3 - 24*x^4 - 3*x^5 + x^6 + (-243 - 54*x + 51*x^2 + 6*x^3 
 - 3*x^4)*Log[4] + (-27 - 3*x + 3*x^2)*Log[4]^2 - Log[4]^3 + E^(2*x^2)*(-2 
7*x^2 - 3*x^3 + 3*x^4 - 3*x^2*Log[4]) + E^x^2*(243*x + 54*x^2 - 51*x^3 - 6 
*x^4 + 3*x^5 + (54*x + 6*x^2 - 6*x^3)*Log[4] + 3*x*Log[4]^2)),x]
 

Output:

9/(-9 + (-1 + E^x^2)*x + x^2 - Log[4])^2
 

Rubi [A] (verified)

Time = 0.74 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.89, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.021, Rules used = {7239, 27, 25, 7237}

Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.

\(\displaystyle \int \frac {e^{x^2} \left (-36 x^2-18\right )-36 x+18}{x^6-3 x^5-24 x^4+53 x^3+216 x^2+\left (3 x^2-3 x-27\right ) \log ^2(4)+e^{3 x^2} x^3+e^{2 x^2} \left (3 x^4-3 x^3-27 x^2-3 x^2 \log (4)\right )+\left (-3 x^4+6 x^3+51 x^2-54 x-243\right ) \log (4)+e^{x^2} \left (3 x^5-6 x^4-51 x^3+54 x^2+\left (-6 x^3+6 x^2+54 x\right ) \log (4)+243 x+3 x \log ^2(4)\right )-243 x-729-\log ^3(4)} \, dx\)

\(\Big \downarrow \) 7239

\(\displaystyle \int \frac {18 \left (-e^{x^2} \left (2 x^2+1\right )-2 x+1\right )}{\left (x^2+\left (e^{x^2}-1\right ) x-9 \left (1+\frac {2 \log (2)}{9}\right )\right )^3}dx\)

\(\Big \downarrow \) 27

\(\displaystyle 18 \int -\frac {-2 x-e^{x^2} \left (2 x^2+1\right )+1}{\left (-x^2+\left (1-e^{x^2}\right ) x+\log (4)+9\right )^3}dx\)

\(\Big \downarrow \) 25

\(\displaystyle -18 \int \frac {-2 x-e^{x^2} \left (2 x^2+1\right )+1}{\left (-x^2+\left (1-e^{x^2}\right ) x+\log (4)+9\right )^3}dx\)

\(\Big \downarrow \) 7237

\(\displaystyle \frac {9}{\left (-x^2+\left (1-e^{x^2}\right ) x+9+\log (4)\right )^2}\)

Input:

Int[(18 - 36*x + E^x^2*(-18 - 36*x^2))/(-729 - 243*x + 216*x^2 + 53*x^3 + 
E^(3*x^2)*x^3 - 24*x^4 - 3*x^5 + x^6 + (-243 - 54*x + 51*x^2 + 6*x^3 - 3*x 
^4)*Log[4] + (-27 - 3*x + 3*x^2)*Log[4]^2 - Log[4]^3 + E^(2*x^2)*(-27*x^2 
- 3*x^3 + 3*x^4 - 3*x^2*Log[4]) + E^x^2*(243*x + 54*x^2 - 51*x^3 - 6*x^4 + 
 3*x^5 + (54*x + 6*x^2 - 6*x^3)*Log[4] + 3*x*Log[4]^2)),x]
 

Output:

9/(9 + (1 - E^x^2)*x - x^2 + Log[4])^2
 

Defintions of rubi rules used

rule 25

Int[-(Fx_), x_Symbol] :> Simp[Identity[-1]   Int[Fx, x], x]
 

rule 27

Int[(a_)*(Fx_), x_Symbol] :> Simp[a   Int[Fx, x], x] /; FreeQ[a, x] &&  !Ma 
tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
 

rule 7237

Int[(u_)*(y_)^(m_.), x_Symbol] :> With[{q = DerivativeDivides[y, u, x]}, Si 
mp[q*(y^(m + 1)/(m + 1)), x] /;  !FalseQ[q]] /; FreeQ[m, x] && NeQ[m, -1]
 

rule 7239

Int[u_, x_Symbol] :> With[{v = SimplifyIntegrand[u, x]}, Int[v, x] /; Simpl 
erIntegrandQ[v, u, x]]
 

Maple [A] (verified)

Time = 1.36 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.89

method	result	size
norman	\(\frac {9}{\left (-x^{2}-{\mathrm e}^{x^{2}} x +2 \ln \left (2\right )+x +9\right )^{2}}\)	\(24\)
risch	\(\frac {9}{\left (-x^{2}-{\mathrm e}^{x^{2}} x +2 \ln \left (2\right )+x +9\right )^{2}}\)	\(24\)
parallelrisch	\(\frac {9}{x^{4}+2 x^{3} {\mathrm e}^{x^{2}}+x^{2} {\mathrm e}^{2 x^{2}}-4 x^{2} \ln \left (2\right )-4 \,{\mathrm e}^{x^{2}} \ln \left (2\right ) x -2 x^{3}-2 x^{2} {\mathrm e}^{x^{2}}+4 \ln \left (2\right )^{2}+4 x \ln \left (2\right )-17 x^{2}-18 \,{\mathrm e}^{x^{2}} x +36 \ln \left (2\right )+18 x +81}\)	\(89\)

Input:

int(((-36*x^2-18)*exp(x^2)-36*x+18)/(x^3*exp(x^2)^3+(-6*x^2*ln(2)+3*x^4-3* 
x^3-27*x^2)*exp(x^2)^2+(12*x*ln(2)^2+2*(-6*x^3+6*x^2+54*x)*ln(2)+3*x^5-6*x 
^4-51*x^3+54*x^2+243*x)*exp(x^2)-8*ln(2)^3+4*(3*x^2-3*x-27)*ln(2)^2+2*(-3* 
x^4+6*x^3+51*x^2-54*x-243)*ln(2)+x^6-3*x^5-24*x^4+53*x^3+216*x^2-243*x-729 
),x,method=_RETURNVERBOSE)
 

Output:

9/(-x^2-exp(x^2)*x+2*ln(2)+x+9)^2
 

Fricas [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 73 vs. \(2 (25) = 50\).

Time = 0.10 (sec) , antiderivative size = 73, normalized size of antiderivative = 2.70 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9}{x^{4} - 2 \, x^{3} + x^{2} e^{\left (2 \, x^{2}\right )} - 17 \, x^{2} + 2 \, {\left (x^{3} - x^{2} - 2 \, x \log \left (2\right ) - 9 \, x\right )} e^{\left (x^{2}\right )} - 4 \, {\left (x^{2} - x - 9\right )} \log \left (2\right ) + 4 \, \log \left (2\right )^{2} + 18 \, x + 81} \] Input:

integrate(((-36*x^2-18)*exp(x^2)-36*x+18)/(x^3*exp(x^2)^3+(-6*x^2*log(2)+3 
*x^4-3*x^3-27*x^2)*exp(x^2)^2+(12*x*log(2)^2+2*(-6*x^3+6*x^2+54*x)*log(2)+ 
3*x^5-6*x^4-51*x^3+54*x^2+243*x)*exp(x^2)-8*log(2)^3+4*(3*x^2-3*x-27)*log( 
2)^2+2*(-3*x^4+6*x^3+51*x^2-54*x-243)*log(2)+x^6-3*x^5-24*x^4+53*x^3+216*x 
^2-243*x-729),x, algorithm="fricas")
 

Output:

9/(x^4 - 2*x^3 + x^2*e^(2*x^2) - 17*x^2 + 2*(x^3 - x^2 - 2*x*log(2) - 9*x) 
*e^(x^2) - 4*(x^2 - x - 9)*log(2) + 4*log(2)^2 + 18*x + 81)
 

Sympy [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 82 vs. \(2 (22) = 44\).

Time = 0.19 (sec) , antiderivative size = 82, normalized size of antiderivative = 3.04 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9}{x^{4} - 2 x^{3} + x^{2} e^{2 x^{2}} - 17 x^{2} - 4 x^{2} \log {\left (2 \right )} + 4 x \log {\left (2 \right )} + 18 x + \left (2 x^{3} - 2 x^{2} - 18 x - 4 x \log {\left (2 \right )}\right ) e^{x^{2}} + 4 \log {\left (2 \right )}^{2} + 36 \log {\left (2 \right )} + 81} \] Input:

integrate(((-36*x**2-18)*exp(x**2)-36*x+18)/(x**3*exp(x**2)**3+(-6*x**2*ln 
(2)+3*x**4-3*x**3-27*x**2)*exp(x**2)**2+(12*x*ln(2)**2+2*(-6*x**3+6*x**2+5 
4*x)*ln(2)+3*x**5-6*x**4-51*x**3+54*x**2+243*x)*exp(x**2)-8*ln(2)**3+4*(3* 
x**2-3*x-27)*ln(2)**2+2*(-3*x**4+6*x**3+51*x**2-54*x-243)*ln(2)+x**6-3*x** 
5-24*x**4+53*x**3+216*x**2-243*x-729),x)
 

Output:

9/(x**4 - 2*x**3 + x**2*exp(2*x**2) - 17*x**2 - 4*x**2*log(2) + 4*x*log(2) 
 + 18*x + (2*x**3 - 2*x**2 - 18*x - 4*x*log(2))*exp(x**2) + 4*log(2)**2 + 
36*log(2) + 81)
 

Maxima [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 78 vs. \(2 (25) = 50\).

Time = 0.21 (sec) , antiderivative size = 78, normalized size of antiderivative = 2.89 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9}{x^{4} - 2 \, x^{3} - x^{2} {\left (4 \, \log \left (2\right ) + 17\right )} + x^{2} e^{\left (2 \, x^{2}\right )} + 2 \, x {\left (2 \, \log \left (2\right ) + 9\right )} + 2 \, {\left (x^{3} - x^{2} - x {\left (2 \, \log \left (2\right ) + 9\right )}\right )} e^{\left (x^{2}\right )} + 4 \, \log \left (2\right )^{2} + 36 \, \log \left (2\right ) + 81} \] Input:

integrate(((-36*x^2-18)*exp(x^2)-36*x+18)/(x^3*exp(x^2)^3+(-6*x^2*log(2)+3 
*x^4-3*x^3-27*x^2)*exp(x^2)^2+(12*x*log(2)^2+2*(-6*x^3+6*x^2+54*x)*log(2)+ 
3*x^5-6*x^4-51*x^3+54*x^2+243*x)*exp(x^2)-8*log(2)^3+4*(3*x^2-3*x-27)*log( 
2)^2+2*(-3*x^4+6*x^3+51*x^2-54*x-243)*log(2)+x^6-3*x^5-24*x^4+53*x^3+216*x 
^2-243*x-729),x, algorithm="maxima")
 

Output:

9/(x^4 - 2*x^3 - x^2*(4*log(2) + 17) + x^2*e^(2*x^2) + 2*x*(2*log(2) + 9) 
+ 2*(x^3 - x^2 - x*(2*log(2) + 9))*e^(x^2) + 4*log(2)^2 + 36*log(2) + 81)
 

Giac [B] (verification not implemented)

Leaf count of result is larger than twice the leaf count of optimal. 88 vs. \(2 (25) = 50\).

Time = 0.42 (sec) , antiderivative size = 88, normalized size of antiderivative = 3.26 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9}{x^{4} + 2 \, x^{3} e^{\left (x^{2}\right )} - 2 \, x^{3} + x^{2} e^{\left (2 \, x^{2}\right )} - 2 \, x^{2} e^{\left (x^{2}\right )} - 4 \, x^{2} \log \left (2\right ) - 4 \, x e^{\left (x^{2}\right )} \log \left (2\right ) - 17 \, x^{2} - 18 \, x e^{\left (x^{2}\right )} + 4 \, x \log \left (2\right ) + 4 \, \log \left (2\right )^{2} + 18 \, x + 36 \, \log \left (2\right ) + 81} \] Input:

integrate(((-36*x^2-18)*exp(x^2)-36*x+18)/(x^3*exp(x^2)^3+(-6*x^2*log(2)+3 
*x^4-3*x^3-27*x^2)*exp(x^2)^2+(12*x*log(2)^2+2*(-6*x^3+6*x^2+54*x)*log(2)+ 
3*x^5-6*x^4-51*x^3+54*x^2+243*x)*exp(x^2)-8*log(2)^3+4*(3*x^2-3*x-27)*log( 
2)^2+2*(-3*x^4+6*x^3+51*x^2-54*x-243)*log(2)+x^6-3*x^5-24*x^4+53*x^3+216*x 
^2-243*x-729),x, algorithm="giac")
 

Output:

9/(x^4 + 2*x^3*e^(x^2) - 2*x^3 + x^2*e^(2*x^2) - 2*x^2*e^(x^2) - 4*x^2*log 
(2) - 4*x*e^(x^2)*log(2) - 17*x^2 - 18*x*e^(x^2) + 4*x*log(2) + 4*log(2)^2 
 + 18*x + 36*log(2) + 81)
 

Mupad [F(-1)]

Timed out. \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\int \frac {36\,x+{\mathrm {e}}^{x^2}\,\left (36\,x^2+18\right )-18}{243\,x+4\,{\ln \left (2\right )}^2\,\left (-3\,x^2+3\,x+27\right )+{\mathrm {e}}^{2\,x^2}\,\left (6\,x^2\,\ln \left (2\right )+27\,x^2+3\,x^3-3\,x^4\right )+2\,\ln \left (2\right )\,\left (3\,x^4-6\,x^3-51\,x^2+54\,x+243\right )-{\mathrm {e}}^{x^2}\,\left (243\,x+2\,\ln \left (2\right )\,\left (-6\,x^3+6\,x^2+54\,x\right )+12\,x\,{\ln \left (2\right )}^2+54\,x^2-51\,x^3-6\,x^4+3\,x^5\right )+8\,{\ln \left (2\right )}^3-x^3\,{\mathrm {e}}^{3\,x^2}-216\,x^2-53\,x^3+24\,x^4+3\,x^5-x^6+729} \,d x \] Input:

int((36*x + exp(x^2)*(36*x^2 + 18) - 18)/(243*x + 4*log(2)^2*(3*x - 3*x^2 
+ 27) + exp(2*x^2)*(6*x^2*log(2) + 27*x^2 + 3*x^3 - 3*x^4) + 2*log(2)*(54* 
x - 51*x^2 - 6*x^3 + 3*x^4 + 243) - exp(x^2)*(243*x + 2*log(2)*(54*x + 6*x 
^2 - 6*x^3) + 12*x*log(2)^2 + 54*x^2 - 51*x^3 - 6*x^4 + 3*x^5) + 8*log(2)^ 
3 - x^3*exp(3*x^2) - 216*x^2 - 53*x^3 + 24*x^4 + 3*x^5 - x^6 + 729),x)
 

Output:

int((36*x + exp(x^2)*(36*x^2 + 18) - 18)/(243*x + 4*log(2)^2*(3*x - 3*x^2 
+ 27) + exp(2*x^2)*(6*x^2*log(2) + 27*x^2 + 3*x^3 - 3*x^4) + 2*log(2)*(54* 
x - 51*x^2 - 6*x^3 + 3*x^4 + 243) - exp(x^2)*(243*x + 2*log(2)*(54*x + 6*x 
^2 - 6*x^3) + 12*x*log(2)^2 + 54*x^2 - 51*x^3 - 6*x^4 + 3*x^5) + 8*log(2)^ 
3 - x^3*exp(3*x^2) - 216*x^2 - 53*x^3 + 24*x^4 + 3*x^5 - x^6 + 729), x)
 

Reduce [B] (verification not implemented)

Time = 0.23 (sec) , antiderivative size = 347, normalized size of antiderivative = 12.85 \[ \int \frac {18-36 x+e^{x^2} \left (-18-36 x^2\right )}{-729-243 x+216 x^2+53 x^3+e^{3 x^2} x^3-24 x^4-3 x^5+x^6+\left (-243-54 x+51 x^2+6 x^3-3 x^4\right ) \log (4)+\left (-27-3 x+3 x^2\right ) \log ^2(4)-\log ^3(4)+e^{2 x^2} \left (-27 x^2-3 x^3+3 x^4-3 x^2 \log (4)\right )+e^{x^2} \left (243 x+54 x^2-51 x^3-6 x^4+3 x^5+\left (54 x+6 x^2-6 x^3\right ) \log (4)+3 x \log ^2(4)\right )} \, dx=\frac {9 x \left (-e^{2 x^{2}} x +4 e^{x^{2}} \mathrm {log}\left (2\right )-2 e^{x^{2}} x^{2}+2 e^{x^{2}} x +18 e^{x^{2}}+4 \,\mathrm {log}\left (2\right ) x -4 \,\mathrm {log}\left (2\right )-x^{3}+2 x^{2}+17 x -18\right )}{6561+1458 x -8 \mathrm {log}\left (2\right )^{2} x^{3}-936 \,\mathrm {log}\left (2\right ) x^{2}+972 \,\mathrm {log}\left (2\right ) x -1458 e^{x^{2}} x -162 e^{x^{2}} x^{2}-1377 x^{2}+1944 \mathrm {log}\left (2\right )^{2}+81 e^{2 x^{2}} x^{2}-162 x^{3}-72 \,\mathrm {log}\left (2\right ) x^{3}-212 \mathrm {log}\left (2\right )^{2} x^{2}+216 \mathrm {log}\left (2\right )^{2} x +5832 \,\mathrm {log}\left (2\right )+81 x^{4}+288 \mathrm {log}\left (2\right )^{3}+16 \mathrm {log}\left (2\right )^{4}+36 \,\mathrm {log}\left (2\right ) x^{4}-16 \mathrm {log}\left (2\right )^{3} x^{2}+16 \mathrm {log}\left (2\right )^{3} x +162 e^{x^{2}} x^{3}+4 e^{2 x^{2}} \mathrm {log}\left (2\right )^{2} x^{2}+36 e^{2 x^{2}} \mathrm {log}\left (2\right ) x^{2}-16 e^{x^{2}} \mathrm {log}\left (2\right )^{3} x +8 e^{x^{2}} \mathrm {log}\left (2\right )^{2} x^{3}-8 e^{x^{2}} \mathrm {log}\left (2\right )^{2} x^{2}-216 e^{x^{2}} \mathrm {log}\left (2\right )^{2} x +72 e^{x^{2}} \mathrm {log}\left (2\right ) x^{3}-72 e^{x^{2}} \mathrm {log}\left (2\right ) x^{2}-972 e^{x^{2}} \mathrm {log}\left (2\right ) x +4 \mathrm {log}\left (2\right )^{2} x^{4}} \] Input:

int(((-36*x^2-18)*exp(x^2)-36*x+18)/(x^3*exp(x^2)^3+(-6*x^2*log(2)+3*x^4-3 
*x^3-27*x^2)*exp(x^2)^2+(12*x*log(2)^2+2*(-6*x^3+6*x^2+54*x)*log(2)+3*x^5- 
6*x^4-51*x^3+54*x^2+243*x)*exp(x^2)-8*log(2)^3+4*(3*x^2-3*x-27)*log(2)^2+2 
*(-3*x^4+6*x^3+51*x^2-54*x-243)*log(2)+x^6-3*x^5-24*x^4+53*x^3+216*x^2-243 
*x-729),x)
 

Output:

(9*x*( - e**(2*x**2)*x + 4*e**(x**2)*log(2) - 2*e**(x**2)*x**2 + 2*e**(x** 
2)*x + 18*e**(x**2) + 4*log(2)*x - 4*log(2) - x**3 + 2*x**2 + 17*x - 18))/ 
(4*e**(2*x**2)*log(2)**2*x**2 + 36*e**(2*x**2)*log(2)*x**2 + 81*e**(2*x**2 
)*x**2 - 16*e**(x**2)*log(2)**3*x + 8*e**(x**2)*log(2)**2*x**3 - 8*e**(x** 
2)*log(2)**2*x**2 - 216*e**(x**2)*log(2)**2*x + 72*e**(x**2)*log(2)*x**3 - 
 72*e**(x**2)*log(2)*x**2 - 972*e**(x**2)*log(2)*x + 162*e**(x**2)*x**3 - 
162*e**(x**2)*x**2 - 1458*e**(x**2)*x + 16*log(2)**4 - 16*log(2)**3*x**2 + 
 16*log(2)**3*x + 288*log(2)**3 + 4*log(2)**2*x**4 - 8*log(2)**2*x**3 - 21 
2*log(2)**2*x**2 + 216*log(2)**2*x + 1944*log(2)**2 + 36*log(2)*x**4 - 72* 
log(2)*x**3 - 936*log(2)*x**2 + 972*log(2)*x + 5832*log(2) + 81*x**4 - 162 
*x**3 - 1377*x**2 + 1458*x + 6561)