HP 20b Business Consultant Financial Calculator User Manual download pdf (Page 16)

Mathematical Calculations

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 :w keys

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

127

1023.1 

in scientific

notation, first enter the mantissa (

1.23 )

and then press :w and enter the number (

127 )

representing the exponent.

The exponent must have a value between -499 and +499.

Figure 1 Scientific Notation in FIX=2 Mode

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 74 75

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HP 20b Business Consultant Financial Calculator User Manual Page 16