3. Consider the piecewise function 5x 2 if x 1. Determine the values of a and b in order to make f(x) continouous at x = 1. 2. Find the following limit. sin x - lim x->/2 v sin x - 4. Determine the interval on which the function f(x) = In x - is continuous. sin x 1. Find all the discontinuities of the piecewise function 202 - 9 if x 1. x - . 2 Determine if each discontinuity is removable, jump, or infinite