Casio CLASSPAD 330 3.04 - Manual (Page 139)

20090601
2-4-12
Function Calculations
I Condition Judgment (judge, piecewise)
S\
“judge” Function
The “judge” function returns TRUE when an expression is true, and FALSE when it is false.
Problem
Use this keyboard:
Operation
mth abc cat 2D
Is the following expression
true or false?
1 = 1
TRUE
Func [judge] 1 1 U
Is the following expression
true or false?
1 < 0
FALSE
Func [judge] 1 0 U
S “piecewise” Function
The “piecewise” function returns one value when an expression is true, and another value
when the expression is false.
The syntax of the “piecewise” function is shown below.
piecewise(<condition expression>, <return value when true>, <return value when false or
indeterminate> [ ) ]
or
piecewise(<condition expression>, <return value when true>, <return value when false>,
<return value when indeterminate> [ ) ]
Use the 2D keyboard ( ) to input “piecewise” function according to the syntax shown
below.
<return value when true>, <condition expression>
<return value when false or indeterminate>
or
<return value when condition 1 is true>, <condition 1 expression>
<return value when condition 2 is true>, <condition 2 expression>
Problem
Use this keyboard:
Operation
mth abc cat 2D
For the expression 0 x
(x = variable), return 1 when
x is 0 or less, and 2 when x
is greater than 0 or
undefined. Func G [piecewise] 0  7 1
2 U
or
1 A 2 CD 0  7
U
For the expression 1 x
(x = variable), return 1 when
x is 1 or less, and 2 when x
is greater than 1. G 1 A 2 CD 1  7
A 1 7U