(7) Where is the function f (x) = if x > 0 discontinuous? Is this a removable dis- 2 2 continuity? Is it a jump discontinuity? (8) We define the floor function [[x] to be the greatest integer not exceeding x. For example, [4] = 4, [[2.37]] = 2, [-1] = -1, [-1.2] = -2. Sketch by hand the graph of y = [[x]] by first tabulating the values of [[x] for several numbers x. Then compare your graph with the plot form the grapher. What are the discontinuities of f(x) = [[x]] where the domain of x is -2.3