Roster Method & Set-Builder Notation...5

[nycmathguy]

College Algebra
Chapter 1/Section 1
Review

Using what I learned about the Roster and set-builder notation for sets, I want to make-up my own examples. Let me know if I am correct or not.

Let Z = the set of all y greater than 0.

Roster Method

Z = {0, 1, 2, 3, 4, 5, . . . }

Yes?

Set-Builder Notation Method

Z = { y| y > 0 }

Yes?

 

[MathLover1]

all y greater than 0 means 0 is excluded

Z = {1, 2, 3, 4, 5, . . . }

 

[nycmathguy]

all y greater than 0 means 0 is excluded

Z = {1, 2, 3, 4, 5, . . . }

Yes, true. I know that y > 0 means DO NOT INCLUDE ZERO.