Using The When Function - Texas Instruments TITANIUM TI-89 User Manual

two-piece functions. For three or more pieces, it may be easier to create a multi-
statement, user-defined function.

Using the When Function

Using the When Function
Using the When Function Using the When Function
To define a two-piece function, use the syntax:
when(condition, trueExpression, falseExpression)
For example, suppose you want to graph a function with two pieces.
When:
x < 0
x | 0
In the Y= Editor:
For three or more pieces, you can use nested
Additional Graphing Topics
Use expression:
M x
5 cos(x)
The function is "pretty
printed" in this form.
Enter the function in this
form.
functions.
when
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