Casio CFX-9970G Algebraic Expressions Manuale Utente Scaricare il pdf (Pagina 12)

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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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Casio CFX-9970G Algebraic Expressions Manuale Utente Pagina 12