### Home > PC > Chapter 7 > Lesson 7.3.1 > Problem 7-98

7-98.

Remember to approach on the curve from both sides of *x* = 4. What height is that?

Approach on the curve from the left (− side) of *x* = 0 only.

What height is that?

As *x*→∞, what height does the graph approach?

You must approach the same height from both sides for the limit to exist.