1.
, .
: =5. .; - =1,0 . .; =0,03, 3%; =10% 0,1; =7.
.
() - (): = + . ; , : = /(1+)t, - ; t , 1989, 1997, t=8.
, : =-=(1-).
.
: =5,0+1,0=6. .
: =6,0/(1+0,03)7=4,88. .
: =6(1- 0,1*7)=1,8. .
2.
.
: =5..; a=0,6. =2..; () 2. .; () 1,5..
.
, 1 . . : , ..
, :
,
i i- ;
i i- ;
k- .
, (), ():
= ( + ) = (1 - a),
a .
.
: =5*(1-0,6)=2..
():
:
: =5,0/2,5=2,0
: =2,0/2,5=0,8 =5,0(1 0,6)/2,5=0,8.