Mathematical Calculations; Mathematical Functions; Number Entry And Display; Math Menu - HP 20B User Manual

2

Mathematical Calculations

Mathematical Functions

Mathematical functions are located:
On keys, such as,

On shifted, or secondary functions, such as,

In the Math menu,


Number Entry and Display

Numbers are entered by pressing:
Numbered keys,

The decimal point

}
The key

:w
The keys

To correct a number entry, press the backspace key,
To enter a number in the display, press the number digits successively. A number can have up to 12 digits.
To change the sign of a number from positive to negative, press
Use scientific notation to enter very large and very small numbers. For example, to enter the number
notation, first enter the mantissa ( 1.23 ) and then press
The exponent must have a value between -499 and +499.
+-*/
, etc.
:s
0 9
-
.
Figure 1 Scientific Notation in FIX=2 Mode
:p
{ {
. Each press of
}
.
:w
and enter the number ( 127 ) representing the exponent.
16
Mathematical Calculations
erases the last digit or symbol you entered.
. 1 23

in scientific
127
10