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Graphing a Piecewise Defined Function
Graphing a Piecewise Defined Function
Graphing a Piecewise Defined Function
Graphing a Piecewise Defined Function
Example: Graph the piecewise defined function:
2
2
3,
1
( )
2,
1
x
x
f x
x
x
+
≤
=
−
>
Enter the function as follows
Y=: (2 X + 3) * (X 2
nd
, MATH, 6, 1) + ( X,
2
x
, -, 2) * ( X 2
nd
,
MATH, 3, 1).
The graph of the function will look like this:
An alternate means of entering a piecewise defined function on a TI84 calculator is to enter as
Y1 the top line of the function (in parentheses) followed by its domain (in parentheses) with no
operation symbol separating the parentheses and then to enter as Y2 the second line of the
function and its domain.
