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11-18 Using mathematical functions

QUOTE Encloses an expression that should not be evaluated

numerically.

QUOTE(expression)

Examples

QUOTE(SIN(45)) F1(X) stores the

expression 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 F1(X) puts the

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

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HP 39g+ Graphing Calculator Guía de usuario Pagina 162