1. What is the domain to the function f(x) = 2+31n(2 +4) ? 2. Show on its domain, this function f(x) is one-to-one, hence invertible. 3. Find explicitly its inverse function f (x) . (Use exp to help you. ) 4. Find the limit lim f-(x) . 20- + 00 5. Find the limit lim f (x) . 2- - 00