Adding functions  Relations and Functions
Adding functions
Basic Concepts
 Adding and subtracting polynomials
 Function notation
 Function notation (Advanced)
 Operations with functions
Related Concepts
 Power rule
 USubstitution
 Integration by parts
Lessons
Notes:
adding functions: $(f+g)(x) = f(x)+g(x)$

2.
Determine the Sum of Two Functions Graphically
Given the graphs of functions $f(x)$ and $g(x)$