Functions: Equivalence, Operations, and Composites

Front

What is the sum of two functions f(x) and g(x)?

Back

(f + g)(x) = f(x) + g(x)

Front

How do you find the composition of two functions g(f(x))?

Back

Substitute f(x) into g(x) to find g(f(x)).

Front

What is the difference of two functions f(x) and g(x)?

Back

(f - g)(x) = f(x) - g(x)