Section 3: Basic Financial Functions

51

Keystrokes

Display

 

 

(RPN mode)

 

 

 

 

 

n

328.00

Number of payments required.

 

12z

27.33

Twenty-seven years and four months.

In ALG mode, perform the RPN steps but replace the last step with the step below.

KeystrokesDisplay (ALG mode)

z12}

27.33

Twenty-seven years and four months.

Because the calculator rounds the calculated value of n up to the next higher integer, in the preceding example it is likely that — while 328 payments will be required to pay off the loan — only 327 full payments of $325 will be required, the next and final payment being less than $325. You can calculate the final, fractional, 328th payment as follows:

Keystrokes

Display

 

(RPN mode)

 

 

 

328n

328.00

Stores total number of payments.*

M

181.89

Calculates FV — which equals the

 

 

overpayment if 328 full payments

 

 

were made.

:P

–325.00

Recalls payment amount.

 

+

–143.11Final, fractional payment.

 

Keystrokes

Display

 

(ALG mode)

 

 

 

328n

328.00

Stores total number of payments.*

M

181.89

Calculates FV — which equals the

 

 

overpayment if 328 full payments

 

 

were made.

*You could skip this step, since 328 is already stored in the n register. If you do so, however, you will need to press Mtwice in the next step (for the reason discussed in the first footnote on page 41; you would not have to press M twice if you had not pressed 12zin RPN mode or z12} in ALG mode after w in the example above.) We choose to show this and the following example in a parallel format so that the procedure is easy to remember: the number you key is the number of the final payment — either the fractional payment or the balloon payment — whose amount is to be calculated.

File name: hp 12c pt_user's guide_English_HDPMF123E27

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Printed Date: 2005/8/1

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