∫ 90x2 log2(3)+ex2 (−300x−300x3) log2(3)________________ 225+60x3 log2(3)+100e2x2x4 log4(3)+4x6 log4(3)+ex2(−300x2 log2(3)−40x5 log4(3)) dx [6991]

Optimal. Leaf size=26 \[ \frac {3}{-3+2 \left (e^{x^2}-\frac {x}{5}\right ) x^2 \log ^2(3)} \]

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Rubi [A]
time = 0.19, antiderivative size = 29, normalized size of antiderivative = 1.12, number of steps used = 3, number of rules used = 3, integrand size = 93, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.032, Rules used = {6820, 12, 6818} \begin {gather*} -\frac {15}{2 x^3 \log ^2(3)-10 e^{x^2} x^2 \log ^2(3)+15} \end {gather*}

Int[(90*x^2*Log[3]^2 + E^x^2*(-300*x - 300*x^3)*Log[3]^2)/(225 + 60*x^3*Log[3]^2 + 100*E^(2*x^2)*x^4*Log[3]^4

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

Int[(u_)*(y_)^(m_.), x_Symbol] :> With[{q = DerivativeDivides[y, u, x]}, Simp[q*(y^(m + 1)/(m + 1)), x] /; !F

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

\begin {gather*} \begin {aligned} \text {integral} &=\int \frac {30 x \left (3 x-10 e^{x^2} \left (1+x^2\right )\right ) \log ^2(3)}{\left (15-10 e^{x^2} x^2 \log ^2(3)+2 x^3 \log ^2(3)\right )^2} \, dx\\ &=\left (30 \log ^2(3)\right ) \int \frac {x \left (3 x-10 e^{x^2} \left (1+x^2\right )\right )}{\left (15-10 e^{x^2} x^2 \log ^2(3)+2 x^3 \log ^2(3)\right )^2} \, dx\\ &=-\frac {15}{15-10 e^{x^2} x^2 \log ^2(3)+2 x^3 \log ^2(3)}\\ \end {aligned} \end {gather*}

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Mathematica [A]
time = 0.05, size = 38, normalized size = 1.46 \begin {gather*} -\frac {30 \log ^2(3)}{30 \log ^2(3)-20 e^{x^2} x^2 \log ^4(3)+4 x^3 \log ^4(3)} \end {gather*}

Integrate[(90*x^2*Log[3]^2 + E^x^2*(-300*x - 300*x^3)*Log[3]^2)/(225 + 60*x^3*Log[3]^2 + 100*E^(2*x^2)*x^4*Log

[3]^4 + 4*x^6*Log[3]^4 + E^x^2*(-300*x^2*Log[3]^2 - 40*x^5*Log[3]^4)),x]

(-30*Log[3]^2)/(30*Log[3]^2 - 20*E^x^2*x^2*Log[3]^4 + 4*x^3*Log[3]^4)

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method	result	size

risch	\(-\frac {15}{2 x^{3} \ln \left (3\right )^{2}-10 \ln \left (3\right )^{2} {\mathrm e}^{x^{2}} x^{2}+15}\)	\(29\)
norman	\(\frac {2 x^{3} \ln \left (3\right )^{2}-10 \ln \left (3\right )^{2} {\mathrm e}^{x^{2}} x^{2}}{2 x^{3} \ln \left (3\right )^{2}-10 \ln \left (3\right )^{2} {\mathrm e}^{x^{2}} x^{2}+15}\)	\(51\)

int(((-300*x^3-300*x)*ln(3)^2*exp(x^2)+90*x^2*ln(3)^2)/(100*x^4*ln(3)^4*exp(x^2)^2+(-40*x^5*ln(3)^4-300*x^2*ln

(3)^2)*exp(x^2)+4*x^6*ln(3)^4+60*x^3*ln(3)^2+225),x,method=_RETURNVERBOSE)

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Maxima [A]
time = 0.52, size = 28, normalized size = 1.08 \begin {gather*} -\frac {15}{2 \, x^{3} \log \left (3\right )^{2} - 10 \, x^{2} e^{\left (x^{2}\right )} \log \left (3\right )^{2} + 15} \end {gather*}

integrate(((-300*x^3-300*x)*log(3)^2*exp(x^2)+90*x^2*log(3)^2)/(100*x^4*log(3)^4*exp(x^2)^2+(-40*x^5*log(3)^4-

300*x^2*log(3)^2)*exp(x^2)+4*x^6*log(3)^4+60*x^3*log(3)^2+225),x, algorithm="maxima")

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Fricas [A]
time = 0.36, size = 28, normalized size = 1.08 \begin {gather*} -\frac {15}{2 \, x^{3} \log \left (3\right )^{2} - 10 \, x^{2} e^{\left (x^{2}\right )} \log \left (3\right )^{2} + 15} \end {gather*}

integrate(((-300*x^3-300*x)*log(3)^2*exp(x^2)+90*x^2*log(3)^2)/(100*x^4*log(3)^4*exp(x^2)^2+(-40*x^5*log(3)^4-

300*x^2*log(3)^2)*exp(x^2)+4*x^6*log(3)^4+60*x^3*log(3)^2+225),x, algorithm="fricas")

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Sympy [A]
time = 0.09, size = 27, normalized size = 1.04 \begin {gather*} \frac {15}{- 2 x^{3} \log {\left (3 \right )}^{2} + 10 x^{2} e^{x^{2}} \log {\left (3 \right )}^{2} - 15} \end {gather*}

integrate(((-300*x**3-300*x)*ln(3)**2*exp(x**2)+90*x**2*ln(3)**2)/(100*x**4*ln(3)**4*exp(x**2)**2+(-40*x**5*ln

(3)**4-300*x**2*ln(3)**2)*exp(x**2)+4*x**6*ln(3)**4+60*x**3*ln(3)**2+225),x)

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Giac [A]
time = 0.42, size = 28, normalized size = 1.08 \begin {gather*} -\frac {15}{2 \, x^{3} \log \left (3\right )^{2} - 10 \, x^{2} e^{\left (x^{2}\right )} \log \left (3\right )^{2} + 15} \end {gather*}

integrate(((-300*x^3-300*x)*log(3)^2*exp(x^2)+90*x^2*log(3)^2)/(100*x^4*log(3)^4*exp(x^2)^2+(-40*x^5*log(3)^4-

300*x^2*log(3)^2)*exp(x^2)+4*x^6*log(3)^4+60*x^3*log(3)^2+225),x, algorithm="giac")

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Mupad [F]
time = 0.00, size = -1, normalized size = -0.04 \begin {gather*} \int \frac {90\,x^2\,{\ln \left (3\right )}^2-{\mathrm {e}}^{x^2}\,{\ln \left (3\right )}^2\,\left (300\,x^3+300\,x\right )}{60\,x^3\,{\ln \left (3\right )}^2-{\mathrm {e}}^{x^2}\,\left (40\,{\ln \left (3\right )}^4\,x^5+300\,{\ln \left (3\right )}^2\,x^2\right )+4\,x^6\,{\ln \left (3\right )}^4+100\,x^4\,{\mathrm {e}}^{2\,x^2}\,{\ln \left (3\right )}^4+225} \,d x \end {gather*}

int((90*x^2*log(3)^2 - exp(x^2)*log(3)^2*(300*x + 300*x^3))/(60*x^3*log(3)^2 - exp(x^2)*(300*x^2*log(3)^2 + 40

*x^5*log(3)^4) + 4*x^6*log(3)^4 + 100*x^4*exp(2*x^2)*log(3)^4 + 225),x)

int((90*x^2*log(3)^2 - exp(x^2)*log(3)^2*(300*x + 300*x^3))/(60*x^3*log(3)^2 - exp(x^2)*(300*x^2*log(3)^2 + 40

*x^5*log(3)^4) + 4*x^6*log(3)^4 + 100*x^4*exp(2*x^2)*log(3)^4 + 225), x)

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3.70.91 \(\int \frac {90 x^2 \log ^2(3)+e^{x^2} (-300 x-300 x^3) \log ^2(3)}{225+60 x^3 \log ^2(3)+100 e^{2 x^2} x^4 \log ^4(3)+4 x^6 \log ^4(3)+e^{x^2} (-300 x^2 \log ^2(3)-40 x^5 \log ^4(3))} \, dx\) [6991]