User manual HP 17BII FINANCIAL BUSINESS CALCULATOR

[. . . ] Built-in applications solve these business and financial tasks: Time Value of Money. Discounted cash flows for calculating net present value and internal rate of return. Using methods of straight line, declining balance, sum-of-the-years' digits, and accelerated cost recovery system. Mean, correlation coefficient, linear estimates, and other statistical calculations. [. . . ] Allows you to enter a new equation. While you're working with a specific equation in the Solver, the equation's own menu appears in the display. To retrieve the primary SOLVE menu, press e. Entering Equations To make an entry into the Solver list: 1. Use the ALPHA menu to type in characters (see page 30), and use the regular keyboard to type in digits and arithmetic operators (+, =, yx, etc. ). Press to verify that the equation is valid, and to create its menu labels. When you press the calculator displays: 12: The Equation Solver 157 while the Solver checks that the equation is mathematically valid. (However, the Solver has no way of checking whether the equation is the right one for your problem. ) If the equation cannot be solved, the calculator briefly displays: and the cursor will blink at the first character that the Solver could not interpret. (It is possible that your mistake is somewhere else, but this is a good place to start looking, since this is where the Solver got stuck. ) The ALPHA-Edit menu appears so you can make changes. Check to be sure you've made no typing mistakes, and that you've followed the rules for writing equations given on page 166 under "What Can Appear in an Equation. " An entry that is not an equation will be stored when you press I , but it cannot be verified when you press . Calculating Using Solver Menus (CALC) If pressing creates a Solver menu for your equation, then the equation is good (that is, mathematically valid). If the equation contains more than six variables, the Solver uses the label to switch between sets of menu labels. Calculator line Solver menu To test whether your equation is in fact correct, test it out by entering some values for which you already know the result, and see if the Solver's result is correct. To do a calculation using a Solver menu: 158 12: The Equation Solver 1. No sharing occurs between variables outside the Solver and those within the Solver. For example, this COST variable in the Solver is not shared with the COST variable in the MU%C and MU%P menus in BUS. To transfer values between built-in variables and Solver variables, store them into storage registers. Remember that the value in the calculator line stays there when you switch menus. Clearing Variables You can clear the variables in a Solver equation just as you clear variables in other menus: press @c while the menu with those variables is displayed. 162 12: The Equation Solver Make sure that the menu for the variables is in the display. If it is, press . ) Pressing @c now sets NEXT; OLD, A%, B%, and C% to zero. Variables are also cleared when their equation is edited. If the SOLVE menu is displayed (rather than the SOLVE CALC menu), then pressing @c will prompt Note . (See "Deleting All Equations or Variables in the Solver, " page 164. ) Deleting Variables and Equations Each equation in the Solver list uses calculator memory to store 1) itself, and 2) its variables. * Deleting a variable is quite different from clearing it: Clearing a variable sets it to zero; the variable retains its storage location in memory. If a variable is shared, its value is lost to all equations that share it. The memory space for a deleted variable is re-created the next time you use that equation. * An equation that has not been verified ( pressed) does not have any variables allocated to it. Therefore, it has no variables to be cleared or deleted. 12: The Equation Solver 163 Deleting One Equation or Its Variables (DELET) To delete an equation or its variables: 1. To delete the equation, respond to both questions: (If the entry has no variables allocated, then only the second question appears. ) 4. [. . . ] See Variables, built-in BUS menu, 49, 254 Business variables, clearing, 50 Buy option, for a lease, 75­77 B-value, in curve fitting, 132 B , 56 , 132 , 78 , 64 , 115 , 56 Backspace key, 20 Balance of loan, 80­81 Balloon payment, 69­71 Batteries, changing, 225­26 Battery life, 224 annunciator, 224 Beeper, 147 Beeper on and off, 36 Begin payment mode, 64, 66 Beginning of list in CFLO list, 98 in SUM list, 124 Bond calculations, 110­13 equations, 249 fractional values for, 111 C %CHG menu, 50 in in in in CFLO menu, 92 SOLVE menu, 157 SUM menu, 122 TIME menu, 142 , 109 , 109 , 132 , 55 , 55 , 56 Index 291 , 56 key, 53 , , 56 @c, 20, 28­29 C, 17, 20, 32 Capitalized value, lease, 74­75 Cash flow calculations, 91­107 equations, 248 list. See CFLO list Cash flow diagrams in cash flow calculations, 92­94 in TVM calculations, 64­66 Cash flows equal. See Cash flows, grouped grouped, 94, 104 initial, 94, 95 maximum number of, 91 sum of, 101 ungrouped, 93 zero, 94, 95 CDATE, 169 CFLO list CALC menu, 101 clearing, 99 copying from, 98 correcting, 97 creating, 94 definition, 91 deleting numbers, 98 editing, 92, 97 entering numbers in, 95­97 GETting a new list, 99 inserting numbers, 98 name, clearing, 99 naming, 98­99 printing, 187 signs of numbers, 92 v, 16, 17, 262 CALC menu in CFLO menu, 101 in SOLVE menu, 158­59 in SUM menu, 128 in TIME menu, 150 Calculations, RPN order of, 274 parenthesis in, 266, 274 Calculator not functioning, 230­31 resetting, 225, 228 Support, 222 Calculator line arithmetic in, 38­48 definition, 18 displaying alphabetic information, 31­32 editing, 20 Calendar. See also Date 360-day, 150 365-day, 150 actual, 150 range of, 149 Calendar basis, 108­9 Call, 110, 112 Canadian mortgage, 197­99, 252 292 Index starting a new list, 99 viewing name of current list, 99 viewing numbers, 97 Chain calculations, 21, 38­39, 38 in RPN, 266, 274 Changing batteries, 225­26 the sign of a number, 22 Characters for CFLO list, 98­99 for equation names, 161 for SUM list, 126 in equations, 166­67 inserting and deleting, 31­32 Chi-squared, 219­20 Clearing, 20 %CHG variables, 50 %T variables, 50 AMRT variables, 80 appointments, 146, 148 BOND variables, 109 BUS variables, 50 calculator memory, 28­29 CFLO lists, 95, 99 ICNV variables, 86 menu variables, 28 menus, 28 MU%C variables, 50 MU%P variables, 50 numbers in RPN, 272 Solver variables, 163 SUM lists, 123 the history stack, 44 the RPN stack, 269, 272 TIME CALC variables, 150 TVM variables, 64 variables, 28­29 Clock. [. . . ]