El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$e^{x} \left(2 x + 3\right) = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{3}{2}$$
Solución numérica$$x_{1} = -69.2550664455487$$
$$x_{2} = -73.2288263375827$$
$$x_{3} = -87.1599423498266$$
$$x_{4} = -43.6123762991977$$
$$x_{5} = -45.5621054272464$$
$$x_{6} = -49.4800392416988$$
$$x_{7} = -81.185891332178$$
$$x_{8} = -107.097816266601$$
$$x_{9} = -57.3639646204873$$
$$x_{10} = -97.1251077464282$$
$$x_{11} = -32.2228906543545$$
$$x_{12} = -99.1191321723437$$
$$x_{13} = -91.1449127706279$$
$$x_{14} = -47.5184058632164$$
$$x_{15} = -121.068219813556$$
$$x_{16} = -117.075851346739$$
$$x_{17} = -55.3885436636418$$
$$x_{18} = -61.3212986069636$$
$$x_{19} = -71.2414769975598$$
$$x_{20} = -109.093051451962$$
$$x_{21} = -83.1767341702885$$
$$x_{22} = -103.107992168746$$
$$x_{23} = -59.3416506828903$$
$$x_{24} = -39.7399625869959$$
$$x_{25} = -119.071962609073$$
$$x_{26} = -75.2170197119183$$
$$x_{27} = -41.6708891458931$$
$$x_{28} = -34.0535275406058$$
$$x_{29} = -79.1956196859299$$
$$x_{30} = -85.1680990547384$$
$$x_{31} = -93.1379739650819$$
$$x_{32} = -77.2059747912483$$
$$x_{33} = -89.1522251748516$$
$$x_{34} = -115.079894756105$$
$$x_{35} = -1.49999999999997$$
$$x_{36} = -35.9247935427181$$
$$x_{37} = -111.088484144567$$
$$x_{38} = -67.2697043196052$$
$$x_{39} = -51.4460658230158$$
$$x_{40} = -105.102791727262$$
$$x_{41} = -1.5$$
$$x_{42} = -101.113433261661$$
$$x_{43} = -65.2855182170941$$
$$x_{44} = -95.1313807202371$$
$$x_{45} = -37.8229288275996$$
$$x_{46} = -63.3026575738261$$
$$x_{47} = -53.4157581982351$$
$$x_{48} = -113.084102279126$$