Mathematical Calculations - HP 40G User Manual

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Mathematical calculations

The most commonly used math operations are available from
the keyboard. Access to the rest of the math functions is via
the MATH menu (
To access programming commands, press
"Programming commands" on page 15-14 for further
information.
Where to start
The home base for the calculator is the HOME view
(
access all
Entering
• Enter an expression into the HP 39G/40G in the same
expressions 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
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
it and then press
Negative
Type
numbers sign.
To raise a negative number to a power, enclose it in
parentheses. For example, (–5)
1-18
manuals search engine
).
). You can do all calculations here, and you can
operations.
to evaluate the expression you have in the
2
23 – 14 8
( )
--------------------------- -
ln 45 :
3 –
23
14
√ 8
3
45
.
TCPX—
to start a negative number or to insert a negative
2
= 25, whereas –5
. See
CMDS
to highlight
2
= –25.
Getting started