El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sin{\left(\sqrt{2 x} \right)} + \cos{\left(x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 1 + \frac{\pi}{2} + \sqrt{1 + \pi}$$
Solución numérica$$x_{1} = 12.3157470013069$$
$$x_{2} = 20.5477430548695$$
$$x_{3} = 69.9471567441799$$
$$x_{4} = 12.9415191895144$$
$$x_{5} = 2.48364650679387$$
$$x_{6} = 42.1704534133272$$
$$x_{7} = 4.60588665736742$$
$$x_{8} = 63.0672395195909$$
$$x_{9} = 76.7958622376973$$
$$x_{10} = 7.20066567788999$$
$$x_{11} = 23.0547348136044$$
$$x_{12} = 28.5693067516788$$
$$x_{13} = 56.1502903049859$$
$$x_{14} = 68.4133206192928$$
$$x_{15} = 83.6177947045107$$
$$x_{16} = 17.6248064570136$$
$$x_{17} = 34.1474303548764$$
$$x_{18} = 97.1945548224517$$
$$x_{19} = 27.8887913565473$$
$$x_{20} = 49.1884179299021$$
$$x_{21} = 90.4164309897716$$
$$x_{22} = 39.7755444207314$$
$$x_{23} = 85.8562564649774$$
$$x_{24} = 35.0796527329645$$
$$x_{25} = 51.1470064711358$$
$$x_{26} = 103.954436094652$$
$$x_{27} = 56.8785451546797$$
$$x_{28} = 80.0258307082478$$
$$x_{29} = 45.4443182445422$$
$$x_{30} = 74.2109456288192$$
$$x_{31} = 91.7007713257653$$
$$x_{32} = 97.5581365353233$$
$$x_{33} = 62.6350176418875$$