El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$e^{3 x} x^{2} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = -56.9564285591976$$
$$x_{2} = -104.914015447984$$
$$x_{3} = -35.020609332757$$
$$x_{4} = -90.9215211521013$$
$$x_{5} = -96.9180261393268$$
$$x_{6} = -106.913110618472$$
$$x_{7} = -48.9724060076277$$
$$x_{8} = -23.1205939455975$$
$$x_{9} = -54.9599475442262$$
$$x_{10} = -88.9227964916592$$
$$x_{11} = -86.924133690229$$
$$x_{12} = -58.953168210794$$
$$x_{13} = -70.9377285847381$$
$$x_{14} = -82.9270125906528$$
$$x_{15} = -52.9637572407815$$
$$x_{16} = -68.9399025313483$$
$$x_{17} = -102.914957029795$$
$$x_{18} = -72.9356816799413$$
$$x_{19} = -62.9473171139803$$
$$x_{20} = -74.9337509925503$$
$$x_{21} = -42.9887576797859$$
$$x_{22} = -44.9827673338993$$
$$x_{23} = 0$$
$$x_{24} = -60.9501389782706$$
$$x_{25} = -15.3187721681397$$
$$x_{26} = -17.2444937849629$$
$$x_{27} = -80.9285649940043$$
$$x_{28} = -37.011169762459$$
$$x_{29} = -92.9203034751201$$
$$x_{30} = -33.0313814570874$$
$$x_{31} = -13.4309164660991$$
$$x_{32} = -66.9422157322182$$
$$x_{33} = -100.915937650008$$
$$x_{34} = -76.9319268943667$$
$$x_{35} = -21.151638457055$$
$$x_{36} = -27.0752886704466$$
$$x_{37} = -78.9302007925419$$
$$x_{38} = -98.9169597883912$$
$$x_{39} = -40.9954066698167$$
$$x_{40} = -64.9446820178225$$
$$x_{41} = -46.9773422738404$$
$$x_{42} = -94.9191396355525$$
$$x_{43} = -31.0437906910508$$
$$x_{44} = -11.6228034243656$$
$$x_{45} = -19.1914671679279$$
$$x_{46} = -50.9678952615886$$
$$x_{47} = -29.0582424375572$$
$$x_{48} = -84.9255373616973$$
$$x_{49} = -39.0028294578469$$
$$x_{50} = -25.0957011759556$$