I needed some help on solving some problems that we haven't really covered in class but are expected to know. For example i was looking at the exam written from previous years and it had some questions that i wasn't able to do it right away. I need explaination for the following, 1. If there is a question asking to find a nonconstant polynomial function, ie., lim f(x)/g(x)=13 or 0 or d.n.e. (as x=>2). How do i find these functions? 2. If a function is defined by a formula with given constants a,b,c,d. How do i find a formula for the inverse of the function with x (element of) range(f)? E.x., f(x)=(ax +b)/(c +dx). 3. How do I show that an unknown function satisfies some given function with some restrictions, for example, f '(x)=f '(0)f(x) and f(0)=1? 4. How do i find a function that is defined everywhere but continuous nowhere?(plz explain) Will appreciate all the help i could get, thanks.