Chapter+4

toc =Chapter 4 - Functions=

Section 4-1
__Vertical Line Test__ - if no vertical line intersects a graph in more than 1 point, then the graph is a function.







Section 4-2

 * Sum of f and g:** (f+g)(x) = f(x) + g(x)
 * Difference of f and g:** (f-g)(x) = f(x) - g(x)
 * Product of f and g:** (f×g)(x) = f(x) × g(x)
 * Quotient of f and g:** (f÷g)(x) = [f(x)÷g(x)], but g(x) cannot equal 0.