1. Precalculus January 17, 2007

2. Solving equations algebraically Solve

3. Algebraic solutions Solve

4. Graphical solutions Solve

5. Inequalities Algebraically Solve

6. Inequalities with technology Solve

7. Relations & Functions A relation is a correspondence between two sets. Let X and Y be two non-empty sets. A function from X to Y is a relation that associates with each element of X exactly one element of Y.

8. Domain & Range of a function

9. Domain Definition Easier to describe where function is not defined. –Can’t divide by 0. –Can’t take the square root of a negative number.

10. Graph the circle

11. Operations on Functions Sum Difference Product Quotient

12. Difference Quotient The difference quotient of f(x) is given by