Consider the functionA. The function f(x) has vertical asympototes at x=B. f(x) is concave up on the regionC. The inflection point for this function isthe direction of concavity also changes aton the interval [-20, 15].Answer the following questions for f (enter points in ascending order, i.e. smallest x values first; enter intervals in ascending order also):toandf(x) =andx3x²-1and x=andtowhere the function is undefined.