Given the following functions: Show that f(x) e O(9(x) using the definition of O0 Do not forget to provide the witnesses. Given the following functions: Show that f(x) E (g(x)) using the definition of (). Do not forget to provide the witnesses Given the following functions: 15x +4, g(x)-22 prove the following statements using the definition of each notation. Do not forget to provide the witnesses. (a) x)E O(ox)) (b) f(x) E (g(x)) (c) f(x)E6(g(x))