# Side Limits

If x is approaching The through values ​​greater than The or on your right we write:

This limit is called the lateral boundary on the right in The.

If x approaches a through values ​​less than The or on your left we write:

This limit is called the left side boundary in The.

The limit of f (x) for xa exists if and only if the right-to-left side boundaries are equal, or are:

• If

• If

## Continuity

We say that a function f (x) is continuous at one point The your domain if the following conditions are met:

### Property of Continuous Functions

If f (x) and g (x) are continuous in x = The, then:

• f (x)g (x) is continuous in The;

• f (x). g (x) is continuous in The;

• is continuous in The .

Next: Limits Surrounding Infinity