HP 17bll+ User Manual page 86

To convert between a nominal annual interest rate and an effective
annual interest rate that is compounded
1. Press  
2. Press  for "continuous".
3. To convert to the effective rate, key in the nominal rate and press
 , then press
4. To convert to the nominal rate, key in the effective rate and press

, then press
Values of EFF% and NOM% are shared between the PER and CONT
menus. For example, an effective interest rate in CONT remains stored
in EFF% when you exit the CONT menu and enter the PER menu.
Pressing
@c
NOM%
Example: Converting from a Nominal to an Effective Interest Rate.
You are considering opening a savings account in one of three banks.
Which bank has the most favorable interest rate?
Bank #1 6.7% annual interest, compounded quarterly.
Bank #2 6.65% annual interest, compounded monthly.
Bank #3 6.65% annual interest, compounded continuously.
Keys:
 

86 6: Interest Rate Conversions
to get the interest conversions menu.
 .

.
in either menu clears NOM% and EFF% in both.
ICNV
PER
EFF% P
Shared variables
between PER and CONT
Display:

 

continuously
:
CONT
NOM% EFF%
Description:
Displays ICNV menu.
Displays PER menu.