Sets and Functions Flashcards
1
Q
N
A
Natural numbers
2
Q
a natural number
A
all whole number > 0
3
Q
W
A
whole numbers
4
Q
Z
A
integers
5
Q
Q
A
rational numbers
6
Q
R
A
real numbers
7
Q
E
A
is a member of
8
Q
{}
A
the empty set
9
Q
domain
A
starting values
10
Q
range
A
answers
11
Q
restrictions
A
-never divide by zero
-can’t square root a negative number
12
Q
composite functions
A
two comined to form a composite function
13
Q
how to do an inverse function
A
- change f(x) to y
- change subject to x
- replace y with x and x with f-1(x)
14
Q
to find the graph of an inverse function
A
reflect the graph of the function in the line y=x
15
Q
exponential function
A
passes (0,1)
passes (1,a)
never touches x axis
