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Solve all of the following 5 problems. Each problem is worth 20 points. Write your answers in the space below the problems and on the front sides of the extra pages; use the back of the pages for scratch paper. Only work appearing on the front side of pages will be graded. Write your name and student number on each page. If you need more paper please ask the tutors. You have an hour and 50 minutes.
Allowed Material: Any calculating device that is not capable of displaying text.
Problem 1. Let and be continuous functions defined on all of .
Problem 2. Let be a continuous function defined on all of , and assume that is rational for every . Prove that is a constant function.
Problem 3. We say that a function is locally bounded on some interval if for every there is an so that is bounded on . Let be a locally bounded function on the interval and let is bounded on and .
Problem 5. Draw an approximate graph of the function making sure to clearly indicate (along with clear justifications) the domain of definition of , its -intercepts and its -intercepts (if any), the behaviour of at and near points at which is undefined (if any), intervals on which is increasing/decreasing, its local minima/maxima (if any) and intervals on which is convex/concave.