Can I get some help with this assignment question? I need the answer by 4 PM. Thank you.

2. (12 pts) Consider the function defined by, f(x) = 3r- + 4r when a 1 (a) Find the values of the parameters o, B E R such that the function f(x) is differentiable at every r E R. State clearly the conditions you use. (a - 63 = (a - b)(a2 + ab + 6?) ) (b) Given the values of the parameters a and S you found in part (a), show that for any r E R the function f(x) = 2x3 + ox + 8 has an inverse function (x = f-'(y)) and find the derivative ". Does the function f(x) = 312 + 4r have an inverse for any r E R? How do you need to restrict the domain of that function to determine an inverse function