HP 39gII, Руководство пользователя

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Getting started 15
Algebraic
precedence
order of
evaluation
Functions within an expression are evaluated in the
following order of precedence. Functions with the same
precedence are evaluated in order from left to right.
1. Expressions within parentheses. Nested parentheses
are evaluated from inner to outer.
2. Prefix functions, such as SIN and LOG.
3. Postfix functions, such as !
4. Power function, ^, NTHROOT.
5. Negation, multiplication, and division.
6. Addition and subtraction.
7. AND and NOT.
8. OR and XOR.
9. Left argument of | (where).
10. Equals, =.
Largest and
smallest
numbers
The HP 39gII represents 1 × 10
–499
(as well as all
numbers smaller than this) as zero. The largest number
displayed is 9.99999999999 × 10
499
. A greater result
is displayed as this number.
Clearing
numbers
•
C deletes the character to the left of the cursor;
that is, it is a backspace key.
•
CANCEL
(
O
) clears the edit line.
•
S
CLEAR
clears all input and output in the display,
including the display history.
Using previous
results
The Home display (
H
) shows you 4-6 lines of input/
output history. An unlimited (except by memory) number
of previous lines can be displayed by scrolling. You can
retrieve and reuse any of these values or expressions.
Output
Last output
Input
Last input
Edit line