El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sqrt{\frac{\left(x^{2} + 3 x\right) + 2}{x + 1}} - 1 = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = -1$$
$$x_{2} = -0.999999999999981$$
$$x_{3} = -0.999999999999969$$
$$x_{4} = -1$$
$$x_{5} = -1$$
$$x_{6} = -0.999999999999988$$
$$x_{7} = -1.00000000000018$$
$$x_{8} = -1$$
$$x_{9} = -0.999999999999999$$
$$x_{10} = -1$$
$$x_{11} = -1.00000000000001$$
$$x_{12} = -0.999999999999968$$
$$x_{13} = -0.999999999999968$$
$$x_{14} = -0.999999999999998$$
$$x_{15} = -1.00000000000003$$
$$x_{16} = -0.999999999999998$$
$$x_{17} = -0.999999999999999$$
$$x_{18} = -1.0000000000009$$
$$x_{19} = -1.00000000000002$$
$$x_{20} = -1$$
$$x_{21} = -0.999999999999844$$
$$x_{22} = -1.00000000000024$$
$$x_{23} = -0.999999999999999$$
$$x_{24} = -1.00000000000002$$
$$x_{25} = -1.0000000000004$$
$$x_{26} = -0.999999999999984$$
$$x_{27} = -0.999999999999992$$
$$x_{28} = -1$$
$$x_{29} = -0.999999999999993$$
$$x_{30} = -1$$
$$x_{31} = -0.999999999999996$$
$$x_{32} = -0.999999999999985$$
$$x_{33} = -0.999999999999947$$
$$x_{34} = -1.00000000000001$$
$$x_{35} = -1.00000000000001$$
$$x_{36} = -1$$
$$x_{37} = -1.00000000000006$$
$$x_{38} = -1$$
$$x_{39} = -0.999999999999998$$
$$x_{40} = -0.999999999999728$$
$$x_{41} = -1.00000000000001$$