HP 38g Graphing Calculator - Manual (Page 37)

Mathematical Calculations
The most commonly used math operations are on the
keyboard. Access to the rest of the math functions is via the
MATH menu (press | math |).
The MATH menu also contains commands to use for
programming.
How to Do Calculations
Where to Start The home base for the calculator is Home (press | home |).
You can do all calculations here, and you can access all
[ MATH I operations.
Entering Expressions
Example
Enter an expression into the HP 38G 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 use Alpha keys to spell out a
function's name.
e Press I ENTER I to evaluate the expression you have in the
edit line (where the blinking cursor is). An expression can
contain numbers, functions, and variables.
Calculate 23^-(14Vs)-!-(-3)ln45 with these keystrokes.
23 ■ [x^] □ Ш 1 4 0 Ш
8 Ш Ш Е 1 ] 3 0 И [ Ш ] 4 5
m riiJiTFI 23a-14*T8/'-3*LNC45)
Ш LtNitKJ 579.245381391
Mathematical Calculations 2-1