The functions g,f:RR are defined by f(x)=13x and g(x)=x2+1. Evaluate f(g(f(0))). Let x be a real number. The least integer function x returns the least integer greater than or equal to x. For example, 50=8,6.34=6,and15=15. Thus, x returns x if it is an integer, otherwise, it rounds xup to the next closest integer. Hence, it is also called the ceiling function of x. What is its domain and codomain? Find the inverse function f:RR defined by f(x)={3x+55x7ifx6ifx>6 Be sure you describe f1 correctly and properly