Mathematical Calculations | HP 30b Professional guide

2 Mathematical Calculations

Mathematical Functions

Mathematical functions are located:

•On keys, such as, +-*/, etc.

•On shifted, or secondary functions, such as, :p

•In the Math menu, :s

Number Entry and Display

Numbers are entered by pressing:

•Numbered keys, 0–9

•The decimal point .

•The }key

•The :wkeys

To correct a number entry, press the backspace key, {. Each press of {erases the last digit or symbol you entered.

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 1.23x 10127 in scientific notation, first enter the mantissa (1.23) and then press

:wand enter the number (127) representing the exponent. The exponent must have a

value between –499 and +499. If an expression has more than 12 digits, or if an operation returns a result with more than 12 digits, the calculator automatically displays scientific notation.

Figure 1 Scientific Notation in FIX=2 Mode

Mathematical Calculations 11

30b Professional, 20b Consultant Financial specifications

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HP 30b Professional Mathematical Calculations, Mathematical Functions, Number Entry and Display

Models: 30b Professional 20b Consultant Financial