# What is the domain and range of # y=2e^(-x)#?

##### 1 Answer

Domain:

Range:

#### Explanation:

My advice is to always graph a function so you can see what it looks like:

graph{2e^-x [-10, 10, -5, 5]}

Just from looking:

Domain:

Range:

Does the graph touch zero? How high does it go? Let's be a bit more rigorous and find out by looking at the behaviour as

This tells us that the graph asymptotes towards

There are no restrictions on the values