I % = 0

PV

 =   

(PMT

n

 + 

FV )

PV + FV

PMT =   

n

FV

 =   (

PMT

n

 + 

PV

)

PV + FV

n =  

PMT

1    

  = (1+ i   S)   

,    

  = (1 + i) 

( Intg(n))

i

(1+ i )

Frac 

(

n

)

 ........... dn : CI (Setup Screen)

  = 

{

1+ i  

 Frac (n) ....... dn : SI (Setup Screen)

         0 ............................ Payment : End 

(Setup Screen)

S

{

 = 

       1 ............................ Payment : Begin 

(Setup Screen)

I % ............................... (P/Y = C/Y = 1)

100

i  = 

{

C/Y

I %

P/Y

(1+

)

 1

(Other than 

.....

100   [C/Y ]

those above) 

u

u

u

u

u I %

i 

(effective interest rate)

i

 (effective interest rate) is calculated using Newton s

Method.

   PV +     PMT + 

   FV = 0

To 

I 

% from 

i 

(effective interest rate)

i   100 ................................. (P/Y = C/Y = 1)

P/Y

I % = 

{                     }

C/Y

{

(1+ i )

 1

(Other than 

   C/Y   100 ...those above)  

E 49