1. If p is a polynomial function and c is a real number,
Lim p(x) = p(c)
2. If r is a rational function given by r(x) = p(x)/q(x), and c is a real number such that q(c) doesn't = 0
Lim r(x) = r(c) = p(c)/q(c)
Since we cannot have a limit that doesn't have a solution, we must rearrange the function to find the limit. We can do this in two ways
1. Cancellation (factoring)
2. Rationalizing (multiplying. By conjugate)
Example of cancellation
15 is cancellation. 17 is rationalizing
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