´ ;
´ ();
´ ();
´ ().
´ ;
´ ;
´ ;
´ .
(paybackperiod)
PB= /
(Discounted paybackperiod)
DPB DPB
DBP: ∑ Investmentst/(1+r)t-1 = ∑Ft /(1+r)t-1
t=1 t=1
:
Investmentst t;
CFt t;
r .
(netpresentvalue)
N N
NPV= - ∑ Investmentst/(1+r)t-1 + ∑Ft /(1+r)t-1
t=1 t=1
N .
NPV<0,
NPV >=0, ( )
(profitabilityindex)
PI= / ()
. , , , .
IRR (internal rate of return)
N N
0 = - ∑ Investmentst/(1+IRR)t-1 + ∑Ft /(1+IRR)t-1
t=1 t=1
IRR . , IRR, . ( , .. , IRR)
NPV, IRR, PI, CC :
NPV>0, IRR>CC PI>1;
NPV<0, IRR<CC PI<1;
NPV=0, IRR=CC PI=1, , .
, -
| 24 2009 18:07 :
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