Limits (An Introduction) - mathsisfun.com
https://www.mathsisfun.com/calculus/limitsBut we can see that it is going to be 2. We want to give the answer "2" but can't, so instead mathematicians say exactly what is going on by using the special word "limit". The limit of (x2−1) (x−1) as x approaches 1 is 2. And it is written in symbols as: lim x→1 x2−1 x−1 = 2. So it is a special way of saying, "ignoring what happens ...