HP 20b Business Consultant Financial Calculator User Manual Page 20
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Mathematical Calculations12
Chain Mode
Calculations in Chain mode are interpreted in the order in which they are entered. For
example, entering the following numbers and operations as written from left to right,
1+2*3=, returns 9. See Figure 2.
Figure 2 Calculation in Chain Mode
NOTE: if you press an operator key, +-*/, after =, the calculation is
continued using the currently displayed value.
In Chain mode, if you wish to override the left to right order of entry, use parentheses
(D to prioritize operations.
For example, to calculate 1 + (2 x 3), you may enter the problem as written from left to right,
with parentheses to prioritize the multiplication operation. See Table 2-1 below.
Algebraic Mode
To set the calculator in Algebraic mode, refer to the section titled, The Mode Menu: Setting
Preferences in Chapter 1.
In Algebraic mode, multiplication and division have a higher priority than addition and
subtraction. For example, in Algebraic mode, pressing
1+2*3=
returns a result of 7.00. In Chain mode, the same key presses return a result of 9.00.
In Algebraic mode, operations between two numbers have the following priority:
• Highest priority: the power function ( y
x
)
• Second priority: combinations and permutations
• Third priority: multiplication and division
• Lowest priority: addition and subtraction
Table 2-1 Simple Arithmetic Calculations in Chain Mode
Keys Display Description
1+
(2*3D
Sets operational priority, inputs numbers,
and multiplies 2 and 3.
=
Adds 1 to 6 and returns 7.00 on the bottom
line as the final result.
- HP 20b Business Consultant 1
- HP 30b Business Professional 1
- Legal Notice 2
- Keyboard Map Legend 5
- Table of Contents 7
- Selecting a Language 9
- Two Line Display 10
- until the 11
- <<< 12
- << 12
- Basic Features 13
- Annunciators 14
- The Input Key 14
- The Equals Key 14
- Editing and Clearing Entries 15
- The On/CE Key 15
- The Reset Menu 15
- Notes about Special Menus 16
- Memory and the Memory Menu 16
- Accessing Menus and Menu Maps 16
- or > 17
- returns 17
- with that 17
- Basic Features10 18
- Mathematical Functions 19
- Number Entry and Display 19
- Chain Mode 20
- Algebraic Mode 20
- I or = are valid 21
- I, this 22
- + changes the 22
- <<<< 23
- Mathematical Calculations 25
- Mathematical Calculations18 26
- Random number 27
- The Math Menu 27
- I on any of these items to 28
- The Probability Sub-menu 29
- Binomial Functions 31
- Two-Number Functions 31
- Storing and Recalling Numbers 32
- Recall Arithmetic 32
- returns 0.25 33
- % to add or subtract x % 34
- - returns 150, or 200-25% 34
- 3 Time Value of Money 35
- :x. Press < or > 37
- A. The Amortization 37
- V, M and [ 37
- A followed by < or 38
- I to reset, or O to cancel 40
- :& 41
- O once again 42
- Canadian Mortgage Example 44
- as 1 is the default 45
- Cash Flow Example 46
- P and IRR R 49
- Cash Flows42 50
- Editing Cash Flows 52
- Sample Cash Flow Diagrams 54
- = to calculate it 56
- Bond Calculation Example 57
- O again to exit the menu 58
- :(HOLD)B 59
- The Black-Scholes Menu 60
- (the Black-Sholes key) 60
- = in the 61
- to scroll through the menu 62
- :(HOLD) B 63
- to scroll to the 64
- 8 Date Calculation 65
- 9Break-even 67
- The Percent Calculation Menu 69
- repeatedly to scroll to the 69
- Percent Calculation Examples 70
- to reset the menu, or O to 72
- 11 D e p r e c i a t i o n 73
- The Depreciation Menu 74
- Depreciation Example 75
- 12 Statistical Operations 77
- The Data and Stats Menus 78
- Statistics Example 80
- :z<< 82
- 13 Programming 83
- : and simultaneously 83
- : >or< 84
- Programming Example 85
- Program Step 0 86
- : and the < 87
- Programming80 88
- Figure 2 88
- (HOLD) 89
- Sub-Function Call 90
- and (HOLD) functions 90
- .05003:$1 91
- Messages 92
- (HOLD) . If you want to 93
- Programming86 94
- Table 13-4 94
- Digit Description 94
- Programming88 96
- 14 E rro r M e s s a g e s 97
- Replacing the Batteries 99
- Regulatory Information 100
- Modifications 101
- Canadian Notice 101
- Avis Canadien 101
- Japanese Notice 102
- Korean Notice 102
- Contact Information 103
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