El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$e^{x - 47} \left(x + 47\right) = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = -47$$
Solución numérica$$x_{1} = -30.0997882891731$$
$$x_{2} = -10.4304175151896$$
$$x_{3} = -119.225798964525$$
$$x_{4} = -93.5083552648417$$
$$x_{5} = -32.0362429736791$$
$$x_{6} = -76.3917570802295$$
$$x_{7} = -46.9999663223857$$
$$x_{8} = -103.358186646447$$
$$x_{9} = -109.298239347659$$
$$x_{10} = 3.46854528738141$$
$$x_{11} = -37.7574234730295$$
$$x_{12} = -97.4381699084522$$
$$x_{13} = 1.48003267951585$$
$$x_{14} = -105.336389337426$$
$$x_{15} = -83.8006485741225$$
$$x_{16} = -33.9608485483065$$
$$x_{17} = -85.7215440170094$$
$$x_{18} = -89.5991101904548$$
$$x_{19} = -4.48028744731149$$
$$x_{20} = -41.4267504478899$$
$$x_{21} = -117.238230256052$$
$$x_{22} = -20.3108703963028$$
$$x_{23} = -46.1242903662838$$
$$x_{24} = -16.3657937898648$$
$$x_{25} = -121.214190044937$$
$$x_{26} = -91.550618994199$$
$$x_{27} = -107.316486753355$$
$$x_{28} = 11.4292608615758$$
$$x_{29} = -12.4108130833517$$
$$x_{30} = -113.265939923289$$
$$x_{31} = -6.46497647342616$$
$$x_{32} = -35.8698045803153$$
$$x_{33} = -18.3397664393491$$
$$x_{34} = -26.2011639109342$$
$$x_{35} = 7.44769388786333$$
$$x_{36} = -43.1659022394984$$
$$x_{37} = -0.507671943383441$$
$$x_{38} = -28.1541283752619$$
$$x_{39} = -73.3147782825773$$
$$x_{40} = -115.251575357138$$
$$x_{41} = -99.4086841814429$$
$$x_{42} = -46.9011058864501$$
$$x_{43} = -47$$
$$x_{44} = 13.420822870543$$
$$x_{45} = -39.6147519889855$$
$$x_{46} = -2.49447955522165$$
$$x_{47} = 15.4128467879287$$
$$x_{48} = -87.6553752443622$$
$$x_{49} = -111.281446733592$$
$$x_{50} = -95.4711655449634$$
$$x_{51} = -101.382167607131$$
$$x_{52} = 9.43820230020186$$
$$x_{53} = 5.45778832039577$$
$$x_{54} = -80.0182140925185$$
$$x_{55} = -44.7758308467779$$
$$x_{56} = -14.3893640843661$$
$$x_{57} = -81.8971886855812$$
$$x_{58} = -74.7168335060868$$
$$x_{59} = -22.278595110719$$
$$x_{60} = -78.1756177264239$$
$$x_{61} = -8.44840759591021$$
$$x_{62} = -24.2422990237083$$