El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$e^{3 - x} \left(x + 11\right)^{2} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = -11$$
Solución numérica$$x_{1} = 117.547108913635$$
$$x_{2} = 89.6649771963334$$
$$x_{3} = 71.791606200036$$
$$x_{4} = 48.1206685040056$$
$$x_{5} = 46.165063095312$$
$$x_{6} = 97.624181885614$$
$$x_{7} = 40.3280689300264$$
$$x_{8} = 79.7279651397122$$
$$x_{9} = 38.3953486685753$$
$$x_{10} = 91.6540874339848$$
$$x_{11} = 93.643678687488$$
$$x_{12} = 73.774339921551$$
$$x_{13} = 99.6150390152271$$
$$x_{14} = 52.043006271823$$
$$x_{15} = 63.8721194715669$$
$$x_{16} = 75.7580277893885$$
$$x_{17} = 55.9772977662381$$
$$x_{18} = 54.0088387106298$$
$$x_{19} = 77.7425925606532$$
$$x_{20} = 69.8099132582734$$
$$x_{21} = 107.581963107346$$
$$x_{22} = 83.7008919328497$$
$$x_{23} = 119.540854921853$$
$$x_{24} = 115.553584865929$$
$$x_{25} = 103.597843713536$$
$$x_{26} = 95.633719703724$$
$$x_{27} = 121.53481165633$$
$$x_{28} = 61.8957021719027$$
$$x_{29} = 85.688340007401$$
$$x_{30} = 105.589748698196$$
$$x_{31} = 101.606267010893$$
$$x_{32} = 50.0801462173116$$
$$x_{33} = 113.560294827291$$
$$x_{34} = 42.2679608614494$$
$$x_{35} = 81.7140835280242$$
$$x_{36} = 109.574469503097$$
$$x_{37} = 111.56725173585$$
$$x_{38} = 57.948089680077$$
$$x_{39} = 65.8500523667737$$
$$x_{40} = 67.8293585995628$$
$$x_{41} = 44.2139207660626$$
$$x_{42} = 87.6763822002933$$
$$x_{43} = 59.9209632127459$$