Expressing functions: algebraic syntax, Fixpressing functions: algebraic syntax -2 – HP 48g Graphing Calculator User Manual
Page 134
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Expressing Functions: Algebraic Syntax
The difference between functions and other commands is that
functions can be included in algebraic expressions. The syntax used
by a function determines how it interprets its inputs (or argum,ents).
Functions can be classified into three types based on their syntax:
a
Prefix functions.
Functions such as ‘SINO-O ' and
'
whose name (or operator) comes before its argument(s) (which are
listed in parentheses and separated by commas).
■ Infix functions.
Functions such as + and that come between their
two arguments.
■ ¡■ | ■
Postfix functions.
Functions such as ! (factorial) that come after
their argument.
Note
In the expression ' fl<B*C> ',
H
is treated as a prefix
function and not as a multiplicative argument. The
HP 48 interprets the expression as “apply function
H to the product of B and C,” instead of “multiply
fl by the product of B and C.” If multiplication is
intended, be sure to include the multiplication
operator, * (or = in the Equation Writer).
11-2 Using Mathematical Functions