El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$2^{x} x = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = -106.672746068506$$
$$x_{2} = -114.631244509604$$
$$x_{3} = -118.613008216895$$
$$x_{4} = -88.8014250620674$$
$$x_{5} = -128.573264419454$$
$$x_{6} = -67.0950160278794$$
$$x_{7} = -80.8832192295871$$
$$x_{8} = -94.751633726379$$
$$x_{9} = -112.640950464776$$
$$x_{10} = -116.621938550104$$
$$x_{11} = -69.0571192091371$$
$$x_{12} = -104.684343038834$$
$$x_{13} = -71.0222949157273$$
$$x_{14} = -90.7838858004464$$
$$x_{15} = -122.596186514716$$
$$x_{16} = -65.1364231661321$$
$$x_{17} = -98.7226655172288$$
$$x_{18} = -57.3496569867605$$
$$x_{19} = -49.6941114193772$$
$$x_{20} = -92.767314973866$$
$$x_{21} = 0$$
$$x_{22} = -102.696499934997$$
$$x_{23} = -51.5891524187821$$
$$x_{24} = -82.8607976381074$$
$$x_{25} = -59.2875943008623$$
$$x_{26} = -86.8200213411656$$
$$x_{27} = -100.7092586773$$
$$x_{28} = -45.9650440589807$$
$$x_{29} = -78.907186047358$$
$$x_{30} = -84.8397745144288$$
$$x_{31} = -47.8174626073422$$
$$x_{32} = -130.566173051845$$
$$x_{33} = -72.9901766183583$$
$$x_{34} = -110.65108295453$$
$$x_{35} = -61.2319946639626$$
$$x_{36} = -55.4194378903721$$
$$x_{37} = -53.4985575119959$$
$$x_{38} = -108.661670935998$$
$$x_{39} = -76.9328665031935$$
$$x_{40} = -126.580620159428$$
$$x_{41} = -74.9604548836911$$
$$x_{42} = -63.1818684083573$$
$$x_{43} = -96.7367716171147$$
$$x_{44} = -124.588255414974$$
$$x_{45} = -120.604431091665$$