calc: Financial Functions

 
 8.6 Financial Functions
 =======================
 
 Calc’s financial or business functions use the ‘b’ prefix key followed
 by a shifted letter.  (The ‘b’ prefix followed by a lower-case letter is
 used for operations on binary numbers.)
 
    Note that the rate and the number of intervals given to these
 functions must be on the same time scale, e.g., both months or both
 years.  Mixing an annual interest rate with a time expressed in months
 will give you very wrong answers!
 
    It is wise to compute these functions to a higher precision than you
 really need, just to make sure your answer is correct to the last penny;
 also, you may wish to check the definitions at the end of this section
 to make sure the functions have the meaning you expect.
 

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