HP 39gII - Apps and their views; HP Apps

Getting started 13
Entering
expressions
• Enter an expression into the HP 39gII in the same left-
to-right order that you would write the expression.
This is called algebraic entry.
• To enter functions, select the key or Math menu item
for that function. You can also enter a function by
using the Alpha keys to spell out its name.
• Press
Eto evaluate the expression you have in the
edit line (where the blinking cursor is). An expression
can contain numbers, functions, and variables.
Example Calculate :
Long results If the result is too long to fit on the display line, or if you
want to see an expression in textbook format, press
=to
highlight it and then press .
Negative
numbers
Type-to start a negative number or to insert a
negative sign.
To raise a negative number to a power, enclose it in
parentheses. For example, (–5)
2
= 25, whereas –5
2
=
–25.
Scientific
notation
(powers of 10)
A number like or is written in
scientific notation, that is, in terms of powers of ten. This
is simpler to work with than 50000 or 0.000000321. To
enter numbers like these, use
EEX. This is easier than using
s10k.
Example Calculate
23
2
14 8–
3–
----------------------------
45()ln
l23j
w
14
sSj8
m
n-
3s
h
45m
E
510
4
×
3.21 10
7–
×
410
13–
×()610
23
×()
310
5–
×
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