El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$- \left(\frac{1}{2}\right)^{x - 2} + \left(\frac{1}{2}\right)^{x} x^{2} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = -2$$
$$x_{2} = 2$$
Solución numérica$$x_{1} = 57.0284869407669$$
$$x_{2} = 129.286700184541$$
$$x_{3} = 89.752520929771$$
$$x_{4} = 81.9202760269166$$
$$x_{5} = 99.5913531732204$$
$$x_{6} = 70.2781170738752$$
$$x_{7} = 117.385792154371$$
$$x_{8} = 58.8834621633725$$
$$x_{9} = 115.404755838134$$
$$x_{10} = 51.6020322974856$$
$$x_{11} = 93.682675396282$$
$$x_{12} = 131.272277164141$$
$$x_{13} = 83.8742537253905$$
$$x_{14} = 105.513069084539$$
$$x_{15} = 76.0790148096127$$
$$x_{16} = 85.8311269918611$$
$$x_{17} = 91.716598184265$$
$$x_{18} = 64.5357490429199$$
$$x_{19} = 101.563955641277$$
$$x_{20} = 68.3563012652945$$
$$x_{21} = 125.317201772681$$
$$x_{22} = 79.9695001061819$$
$$x_{23} = 66.4418078400044$$
$$x_{24} = 74.1401832473195$$
$$x_{25} = 103.53789289832$$
$$x_{26} = 121.350131296059$$
$$x_{27} = 107.489397363245$$
$$x_{28} = 72.2063343373465$$
$$x_{29} = 97.6201915906653$$
$$x_{30} = 52.166051705194$$
$$x_{31} = 123.33334520012$$
$$x_{32} = 62.6394826296252$$
$$x_{33} = 111.445201846362$$
$$x_{34} = 78.0222776614937$$
$$x_{35} = 60.7546863035367$$
$$x_{36} = 55.1932345128199$$
$$x_{37} = 109.466798877019$$
$$x_{38} = 87.7906278975308$$
$$x_{39} = 127.301664653329$$
$$x_{40} = 95.6505886435496$$
$$x_{41} = 113.424540788525$$
$$x_{42} = 53.3823172111448$$
$$x_{43} = -2$$
$$x_{44} = 119.367599402058$$
$$x_{45} = 2$$