Test Functions - HP 40G User Manual

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QUOTE
Encloses an expression that should not be evaluated
numerically.
QUOTE(expression)
Examples
QUOTE(SIN(45))
SIN(45) rather than the value of SIN(45).
Another method is to enclose the expression in single
quotes.
For example, X^3+2*X
expression X^3_2*X into F1(X) in the Function aplet.
| ( where )
Evaluates expression where each given variable is set to the
given value. Defines numeric evaluation of a symbolic
expression.
expression|(variable1=value1, variable2=value2,...)
Example
3*(X+1)|(X=3) returns 12.

Test functions

The test functions are logical operators that always return
either a 1 (true) or a 0 (false).
<
Less than. Returns 1 if true, 0 if false.
value1<value2
≤
Less than or equal to. Returns 1 if true, 0 if false.
value1≤value2
= =
Equals (logical test). Returns 1 if true, 0 if false.
value1==value2
≠
Not equal to. Returns 1 if true, 0 if false.
value1≠value2
>
Greater than. Returns 1 if true, 0 if false.
value1>value2
≥
Greater than or equal to. Returns 1 if true, 0 if false.
value1≥value2
10-20
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F1(X) stores the expression
TUPc•
F1(X) puts the
TUPc•
Using mathematical functions