4-1

This week in advanced math we started chapter 4, we dealt with section 4-1 which was Domain and Range. We also had the vertical line test. But 4-1 involves 3 different types of problems. Polynomials, Square Roots, and Fractions. The secret behind chapter 4 is that you have to pay attention to see which formula you have to use.

4-1 Polynomial

-Domain is always (-∞, ∞)

-Range os (-∞, ∞) if odd

Ex: f(x)= 25-5x; solve for x and find domain and range

0= 25-5x

5x=25

x=5

D: (-∞, ∞)

R: (-∞, ∞)