HP 39g Graphing Calculator - Manual (Page 33)

Clearing
numbers
I DEL I clears the character under the cursor. When the
cursor is positioned after the last character, | del | deletes
the character to the left of the cursor, that is, it performs
the same as a backspace key.
CANCEL (|ON I) clears the edit line.
rstTiFT]ck£/tfi clears all input and output in the display.
including the display history.
Using
previous
results
The HOME display ([ home |) shows you four 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.
, . im^^FUNCTIDNS
Input -yl+2+3
Last input
Edit line -kWF I
Output
99/7^ Last output
When you highlight a previous input or result (by pressing
[Xl), the and HiMBI menu labels appear.
i(333 E'S/'^FUNaiDNffl
1+2+3
■T
2
6
99/70
5+77+99/70^
To copy a
previous line
To reuse the last
result
To repeat a
previous line
Highlight the line (press XI) and press B3S3. The number (or
expression) is copied into the edit line.
Press [ sh T fj ^AWS (last answer) to put the last result from the
HOME display into an expression. ANS is a variable that is
updated each time you press | ENTER |.
To repeat the very last line, just press | ENTER]. Otherwise,
highlight the line (press X]) first, and then press [
enter ] . The
highlighted expression or number is re-entered. If the
previous line is an expression containing the
ans , the
calculation is repeated iteratively.
Getting started 1-21