(a) Evaluate the following limit: (i) . x2 - y2 lim x - y x-y (ii) 6x - 6 lim 7x + 4 x-+00 (b ) Given a function g(x), 2x - 1 jika if x1 (i) Sketch the graph for the function g(x). (ii) Find all the points where function is discontinous. Determine whether the function x'+1 h(x) =. x3 + 1 is continuous at point x = -1