How do you find the range of a function for a domain?

The domain is all the possible x values and the range is all the possible y values.

 

Basically you have to look for values that x or y cannot be.

 

You cannot divide by 0

You cannot find the square root of a negative number.

You cannot find the log of 0 or of a negative number.

 

Thes are a amoung the most common things you have to look for. :)