El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sinh{\left(x \right)} + \cosh{\left(x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = -60$$
$$x_{2} = -74$$
$$x_{3} = -56$$
$$x_{4} = -31.4351076655144$$
$$x_{5} = -31.8068109608349$$
$$x_{6} = -80$$
$$x_{7} = -82$$
$$x_{8} = -54$$
$$x_{9} = -32.9111133494145$$
$$x_{10} = -52$$
$$x_{11} = -36$$
$$x_{12} = -66$$
$$x_{13} = -31.9332503211554$$
$$x_{14} = -42$$
$$x_{15} = -62$$
$$x_{16} = -40$$
$$x_{17} = -64$$
$$x_{18} = -50$$
$$x_{19} = -30.8674880269932$$
$$x_{20} = -32.5511363636364$$
$$x_{21} = -68$$
$$x_{22} = -32$$
$$x_{23} = -46$$
$$x_{24} = -31.4061531016427$$
$$x_{25} = -38$$
$$x_{26} = -28.8720054401071$$
$$x_{27} = -44$$
$$x_{28} = -94$$
$$x_{29} = -100$$
$$x_{30} = -92$$
$$x_{31} = -32.6939864925871$$
$$x_{32} = -34$$
$$x_{33} = -84$$
$$x_{34} = -78$$
$$x_{35} = -58$$
$$x_{36} = -48$$
$$x_{37} = -32.5125067909219$$
$$x_{38} = -86$$
$$x_{39} = -72$$
$$x_{40} = -70$$
$$x_{41} = -33.3003794196351$$
$$x_{42} = -98$$
$$x_{43} = -76$$
$$x_{44} = -88$$
$$x_{45} = -90$$
$$x_{46} = -31.5625682373538$$
$$x_{47} = -96$$