1. Use the graph to determine the following limits. (a) lim f(x) (b) lim f(x) * -+ 2 (c) lim f(x) (d) lim f(x) x -+ 3 2. Use the graph to determine the following limits. (a) lim f(x) (b) lim f(x) x -+ 1 x - (c) lim f(x) (d) lim f(x) x - 3 x -+ Chapter 2 The Derivative Applied Calculus 79 5. Evaluate (a) lim- x' + 3x+3 (b) lim x'+ 3x +3 x -2 x-+2 x -2 6. Evaluate (a) lim x+7 (b) lim x+7 x-+0 x +9x+14 x-+3 x2+ 9x +14 x + 7 x+7 (c) lim d) lim x-+ 4 x2 +9x +14 17 x7+ 9x +14 7. At which points is the function shown discontinuous