Exercise 1: 4r +3 Differentiate 4 va Exercise 2: Find equations of the tangent and normal lines to the curve r + 1 at (1, 1) . Exercise 3: sin 6 Differentiate 1 - cos 0 Exercise 4: Find sin 3r lim Exercise 5: 5 Differentiate y = (3x 4 4x - 7x -1)