Give an example of a continuous function whose derivative does not exist at x = 0. (hint: this would be relatively easy to do with a piecewise function, but you have to think of a function that uses formula that maple ta recognises. check the syntax guide for examples of the functions that are accepted by maple ta.) (b) give an example of a function which is continuous at x 2 but whose derivative does not exist at x = 2 3 but whose derivative does not exist at any of those points. (c) give an example of a function that is continuous at x = -2, x = 0 and x