hp40g+.book Page 17 Friday, December 9, 2005 1:03 AM
| Examples |
|
| SIGN |
|
| SIGN((3,4)) returns | (.6,.8) |
TRUNCATE | Truncates value to decimal places. Accepts complex | |
| numbers. |
|
| TRUNCATE(value, places) | |
| Example |
|
| TRUNCATE(2.3678,2) returns 2.36 | |
XPON | Exponent of value. |
|
| XPON(value) |
|
| Example |
|
| XPON(123.4) returns | 2 |
These are functions for use with
See
| 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 | |
| ( | CHARS) as well as the MATH menu. |
= (equals) | Sets an equality for an equation. This is not a logical | |
| operator and does not store values. (See “Test functions” | |
| on page | |
|
| expression1=expression2 |
ISOLATE | 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 any integer.
ISOLATE(expression, variable)
Using mathematical functions |
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|