Notation Flashcards
1
Q
ℤ
A
Integer
2
Q
ℕ
A
Natural number
3
Q
ℚ
A
Rational number
4
Q
∈
A
Element of
5
Q
∉
A
Not an element of
6
Q
⊂
A
Subset
7
Q
∪
A
Union
8
Q
ℝ
A
Real number
9
Q
I
A
Irrational
10
Q
(a,b)
A
{x: a<x<b}
11
Q
[a,b]
A
{x: a≤x≤b}
12
Q
(a+b)2
A
= a2+2ab+b2
13
Q
a3+b3
A
= (a+b)(a2-2ab+b2)
13
Q
Pascals triangle
A
(0) 1
(1) 1 1
(2) 1 2 1
(3) 1 3 3 2
(4) 1 4 6 4 1
(5) 1 5 10 10 5 1
