Using mathematical functions
SIGN (–2) returns –1
SIGN((3,4)) returns (.6,.8)
Truncates value to decimal places. Accepts complex
TRUNCATE(2.3678,2) returns 2.36
Exponent of value.
XPON(123.4) returns 2
These are functions for use with two-variable statistics.
See "Two-variable" on page 10-15.
The symbolic functions are used for symbolic
manipulations of expressions. The variables can be
formal or numeric, but the result is usually in symbolic
form (not a number). You will find the symbols for the
symbolic functions = and | (where) in the CHARS menu
) as well as the MATH menu.
Sets an equality for an equation. This is not a logical
operator and does not store values. (See "Test functions"
on page 13-19.)
Isolates the first occurrence of variable in expression=0
and returns a new expression, where
variable=newexpression. The result is a general solution
that represents multiple solutions by including the (formal)
variables S1 to represent any sign and n1 to represent