Casio CFX-9970G Manual - Page 12

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Casio CFX-9970G Manual

20-4 Signum Function

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