# How to find limits in calculus

- The Limits of a Function
- Find Limits of Functions in Calculus
- Strategy in finding limits
- 1. Limits and Differentiation

## The Limits of a Function

How To Evaluate Limits From a Graph

howIn the previous section we saw that there is a large class of functions that allows us to use. The purpose of this section is to develop techniques for dealing with some of these limits that will not allow us to just use this fact. The first thing that we should always do when evaluating limits is to simplify the function as much as possible. In this case that means factoring both the numerator and denominator. Doing this gives,. Therefore, the limit is,.

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The only thing that matters is how f x is defined near a. If f is a polynomial or a rational function and a is the domain of f , then. Instead, we need to do some preliminary algebra. We factor the numerator as a difference of squares and then cancel out the common term x — 1. How to calculate a Limit By Factoring and Canceling?

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". So it is a special way of saying, "ignoring what happens when we get there, but as we get closer and closer the answer gets closer and closer to 2". Limits can be used even when we know the value when we get there! Nobody said they are only for difficult functions. So instead of trying to work it out for infinity because we can't get a sensible answer , let's try larger and larger values of x:.

Sometimes we can't work something out directly 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". So it is a special way of saying, "ignoring what happens when we get there, but as we get closer and closer the answer gets closer and closer to 2". In the example above we said the limit was 2 because it looked like it was going to be. But that is not really good enough! The first thing to try is just putting the value of the limit in, and see if it works in other words substitution.

## Find Limits of Functions in Calculus

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## Strategy in finding limits

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## 1. Limits and Differentiation

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## 4 thoughts on “How to find limits in calculus”

In this section, we strive to understand the ideas generated by the following important questions:.

By Yang Kuang, Elleyne Kase.