Casio fx-9750G PLUS - Manual (Page 373)

345
P.6
19-6 Conversion between Percentage Interest
Rate and Effective Interest Rate
Press 5 (CNVT) in the Financial 1 screen to display the following input screen
for interest rate conversion.
n ...................... number of compoundings
I % ................... interest rate
• {' ' ' ' ' EFF}/{' ' ' ' ' APR} ... {annual percentage rate to effective interest rate}/{effective
interest rate to annual percentage rate} conversion
k k k k k
Converting the Annual Percentage Rate (APR) to the
Effective Interest Rate (EFF)
EFF =
n
APR/ 100
1+ –1 × 100
n
Example Calculate (to two decimal places) the effective interest rate for
an account paying an interest rate of 12%, compounded
quarterly.
In the set up screen, specify “ Fix2” for Display and then press J.
Perform the following key operations from the input screen.
ew ( n = 4)
bcw ( I % = 12%)
1 (' EFF )
• The obtained value is assigned to I %.
k k k k k
Converting the Effective Interest Rate (EFF) to the Annual
Percentage Rate (APR)
APR =
100
EFF
1+ –1 × n ×100
1
n