Chapter R Flashcards
1
Q
N with double line
A
natural numbers. Whole positive numbers
2
Q
W whole numbers
A
whole #s. Whole positive numbers including zero
3
Q
Z integers
A
integers. Includes -#s. negative infinity
4
Q
Q rational
A
any p/q where p and q are ints and q≠0
5
Q
I irrational
A
anything not rational. π, e, root2
6
Q
Q + I = R
A
R is real numbers
7
Q
interval notation
A
() is “open” and [] is “closed”, open does not include the numbers
8
Q
set notation
A
{ x | x > 2 }