5.


5. - 559


nRate := 0.095/12 //
? PV(175, nRate, 24) // 3811.43
 
, 175
, 9.5%::
 
? PV(175, 0.095, 2) // 305.77
 


See Also: FV()
PAYMENT()
PERIODS()
RATE()

 


 


RATE()
.
------------------------------------------------------------------------------
 

 
RATE(<nCapital>, <nPayment>, <nNumberPayments>) --> nInterestRate
 

 
<nCapital> - , .
 
<nPayment> - , .
 
<nNumberOfPayments> - ,
.
 

 
nInterestRate - ,
( 1 100 %).
 

 

<nCapital>, <nNumberOfPayments>
<nPayment>.
:
 
<nInterestRate> = lim(ik)
 
f(ik)
ik+1 = ik - --------,
f'(ik)
 
1 - (1+ik)^(- <nNumberOfPayments>) <nCapital>
f(ik) = - ---------------------------------- - ----------
ik <nPayment>
 
i :
 
<nPayment> <nCapital>
i0 = ----------- - ----------------------------------