Week 7 Warm Up 04.30.12 solve when x = 3 x3 - 2 a) 5 b) -5 c) ±5 d) 25 1) x3 - 2 a) 5 b) -5 c) ±5 d) 25

I will graph radical functions. Section 12.1 Day 1 I will graph radical functions. Rule 1 No negative under the radical. Ex 1  

Ex 1   x y   1 2 3 4 1 1.4 • • • • 1.7 • 2

Ex 1   x y   1 2 3 4 1 1.4 1.7 2

Ex 2   x y   1 2 3 4 2 • • • 2.83 • 3.46 • 4

Ex 2   x y   1 2 3 4 2 2.83 3.46 4

Check 1:   x y   1 2 3 4 4 5.66 6.93 8

Ex 3   x y   1 2 3 4 3 • 4 • • • • 4.41 4.73 5

Ex 3   x y   1 2 3 4 3 4 4.41 4.73 5

Check 2:   x y   1 2 3 4 -2 -1 -.59 -.27

Rule 2 Start with what makes under the radical 0. Ex 4       x y 2   3 4 5 6 1 1.41 • • • • 1.73 • 2

Ex 4       x y   1 2 3 4 1 1.41 1.73 2

  Check 3:   Assignment Handout – Section 12.1 Day 1