Week 4:
1. Questions
2. Tools quiz: 20 minutes: 3×3
3. Review quiz and 3×3
4. Make your own..
5. Equilateral in a box
6. Where are we: solve anything?? yes and no
-any linear equation
-# of equations = # of variables
– 4×4? 5×5?
7. Chapter 2. 2.1 Adding and Subtracting Functions
a. Want 2 changes.. ie rental cost and fuel cost
b. Graph Adding functions
c. Subtract functions: miles=cost – rebate -graph
d. What is a polynomial? ax^n, a=real, n is positive int
e. monomial, binomial, trinomial: examples
f. f(x) = 2x – 3, g(x) = x^2 + 4x -5
find (f+g)x (f-g)x
8. 2.3. Multiply and Divide Polynomials:
a. 9 x 5 plot: add x feet to length and width -diagram
(9 + x) ( 5 + x) First, Outer,Inner,Last
b. Multiply functions: examples:
c. multiply terms with same base: x^3(x^5)
d. (-2a^5)(8b^3)(3a^2b) mathway
e. (x^2 – 3x + 1) ( 3x^2 – 5x + 2)
9. Probability: # of successes / # of possibilities.. 4 jacks
with and without replacement: factorials
10. Review: f(x) = 3x^2 + 2x – 1 g(x) = 4x – x^2 + 5
(2x^4 – 3x^2 + 6) ( x^3 – 4x - 2)
11. 2.4 Scientific Notation
2.45 x 10^7 3,435,256,527,325
negative exponents: .00000000034 5.7 x 10^-5
a^m/a^n = a^(m-n) examples
a^0 = 1 definition
Examples exercise 2.4 6-20
GRE? Graph Polynomials
12. Problem Solving Quiz