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360
20-4 Signum Function
The signum function described in this section is available in the ALGBR Mode.
Syntax: signum (<expression>[)]
• A solution can be obtained only when <expression> is a numeric value.
Definition:
1 (real number, A > 0)
Undefined (A = 0)
–1 (real number, A < 0)
|A|
signum(A)
(A = imaginary number)
A
Example To solve signum (3.1)
K5(sign)d.bw 1
Example To solve signum (–4)
K5(sign)-ew – 1
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