question1-3

1. Explain what a derivative of a function represents: Mark: 3 2. Explain how the product rule can be used instead of the quotient rule on the function: y = (3 + x) / (2x - 9) Mark: 3 3. For the function f(x) below at what points can the limit not determined? Why can the limit not be determined at these values? Mark 4: 10 10