This is an evaluation, make sure you are completing the work on your own. To earn full marks, you must justify your solution. Include the following as needed: Show diagram, define variables, state formula, theorem, equation or function used, Show substitutions and or steps in solving an equation, State restrictions, state concluding statement, Use correct notation. A mark of zero will be given for stating just the answer. 1. Ella thinks that if a function is positive over an interval, then its derivative is also positive. Is Ella correct? Explain. Illustrate with an graphical example [C -3] 2. Given the graph of y = f(x) below, indicate the intervals where [C-3] a) The function is positive . . . . . .. - 2 2 b) The derivative is negative ... ... .... . . . ...... -2- 3. Explain why lim v2x - 6 does not exist. [C - 3] x-3