El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$e^{2 \left(x + 1\right)} \left(- 2 x - 1\right) = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{1}{2}$$
Solución numérica$$x_{1} = -76.4413870396704$$
$$x_{2} = -60.4638338476533$$
$$x_{3} = -0.5$$
$$x_{4} = -104.419819432239$$
$$x_{5} = -110.416714071663$$
$$x_{6} = -90.4287977053592$$
$$x_{7} = -20.759578163551$$
$$x_{8} = -48.4920342211769$$
$$x_{9} = -84.433636897527$$
$$x_{10} = -78.4392871073878$$
$$x_{11} = -22.7067090233633$$
$$x_{12} = -46.4984043546286$$
$$x_{13} = -40.5221027755018$$
$$x_{14} = -94.4259397757588$$
$$x_{15} = -66.4540022006131$$
$$x_{16} = -98.4233313578152$$
$$x_{17} = -54.4761503173351$$
$$x_{18} = -32.5712440239832$$
$$x_{19} = -24.6666674909464$$
$$x_{20} = -108.417708464681$$
$$x_{21} = -86.4319427865848$$
$$x_{22} = -18.8330495779099$$
$$x_{23} = -30.5888490325451$$
$$x_{24} = -62.4603204410185$$
$$x_{25} = -80.4373013321848$$
$$x_{26} = -100.422110714952$$
$$x_{27} = -56.4717127801442$$
$$x_{28} = -70.4484796907337$$
$$x_{29} = -88.4303317107386$$
$$x_{30} = -106.41874276702$$
$$x_{31} = -82.4354206407392$$
$$x_{32} = -34.5562425322053$$
$$x_{33} = -50.4862516002592$$
$$x_{34} = -16.9434599522291$$
$$x_{35} = -74.4436112795009$$
$$x_{36} = -92.4273353642558$$
$$x_{37} = -26.635212520607$$
$$x_{38} = -58.4676202298138$$
$$x_{39} = -28.60981127163$$
$$x_{40} = -36.5433024252964$$
$$x_{41} = -102.420941119379$$
$$x_{42} = -52.4809785350463$$
$$x_{43} = -38.5320233069445$$
$$x_{44} = -44.5054567974379$$
$$x_{45} = -96.4246064673916$$
$$x_{46} = -42.5133080197784$$
$$x_{47} = -68.4511511976694$$
$$x_{48} = -72.445971219491$$
$$x_{49} = -64.457051457651$$