HP 39g+ Graphing Calculator Guide de l'utilisateur télécharger pdf (Page 143)

Using the Finance Solver 10-7

Calculating Amortizations

Amortization calculations, which also use the TVM

variables, determine the amounts applied towards

principal and interest in a payment or series of payments.

To calculate amortizations:

1. Start the Finance Solver as indicated at the beginning

of this section.

2. Set the following TVM variables:

a Number of payments per year (P/YR)

b Payment at beginning or end of periods

3. Store values for the TVM variables I%YR, PV, PMT,

and FV, which define the payment schedule.

4. Press the

soft menu key and enter the

number of payments to amortize in this batch.

5. Press the soft menu key to amortize a batch of

payments. The calculator will provide for you the

amount applied to interest, to principal, and the

remaining balance after this set of payments have

been amortized.

Example 3 - Amortization for home mortgage

For the data of Example 2 above, find the amortization of

the loan after the first 10 years (12x10 = 120 payments).

Pressing the soft menu key produces the

screen to the left. Enter 120 in the PAYMENTS field, and

press the soft menu key to produce the results

shown to the right.

To continue amortizing the loan:

1. Press the soft menu key to store the new

balance after the previous amortization as PV.

2. Enter the number of payments to amortize in the new

batch.

1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 293 294

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HP 39g+ Graphing Calculator Guide de l'utilisateur Page 143