Functions Operations: Adding and Subtracting Functions

-  Just like we can add and subtract numbers and expressions, we can add or subtract functions and simplify or evaluate them. The result is a new function.
-  For two functions and , we can create two new functions.


Examples:
Example 1.  , , Find:
Solution:
Then:

Example 2.  , , Find:
Solution: 
Then:

Example 3.  , , Find:
Solution:
Then:

Example 4.  , , Find:
Solution: 
Then:
Substitute with :