Hp 50g Graphing Calculator Uživatelský manuál stáhnout pdf (Strana 691)

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operators are used to make a statement regarding the relative position of two or

more real numbers. Depending on the actual numbers used, such a statement

can be true (represented by the numerical value of 1. in the calculator), or false

(represented by the numerical value of 0. in the calculator).

The relational operators available for programming the calculator are:

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Operator Meaning Example

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ːːʳ “is equal to” ‘x==2’

≠ “is not equal to” ‘3 ≠ 2’

ˏ “is less than” ‘m<n’

> “is greater than” ‘10>a’

≥ “is greater than or equal to” ‘p ≥ q’

≤ “is less than or equal to” ‘7≤12’

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All of the operators, except == (which can be created by typing ‚Å

‚Å ), are available in the keyboard. They are also available in „°

@)TEST@.

Two numbers, variables, or algebraics connected by a relational operator form

a logical expression that can take value of true (1.), false (0.), or could simply

not be evaluated. To determine whether a logical statement is true or not,

place the statement in stack level 1, and press EVAL (μ). Examples:

‘2<10’

μ, result: 1. (true)

‘2>10’

μ, result: 0. (false)

In the next example it is assumed that the variable m is not initialized (it has not

been given a numerical value):

‘2==m’

μ, result: ‘2==m’

The fact that the result from evaluating the statement is the same original

statement indicates that the statement cannot be evaluated uniquely.

1 2 ... 686 687 688 689 690 691 692 693 694 695 696 ... 886 887

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