118                                                   5

(I + ^)  [(I + /-^)  $946,93 - $50] =$1050,                (5.6)

   7,975%.

 ,    -     -
 ,       
   '.      -
     (internal rate of return) 
,     ,   -
    .      -
,     (5.4)  (1 + ^):

$934,58=$1000

(5.7)

,       (5.5)    
(1+/,)2:

$857,34= $1000

       (5.6)   (1 + ^)2:

,,,    $50     $1050

$946,93 -

0+/) (1+;)2



$946,93=--^ $1050

4)7tU,7-)--.                                   / Q\

(1+) (1+)2                       ^

   (5.7), (5.8)  (5.9)   (5.4), (5.5)  (5.6) -
,      : /-  7%, /-g=8% 
/- = 7,975% .

       
.         -
     10%,     (5.9)
  $913,22,   .      
  , , 6%.    ,    .
    6  10%.   ,   
   .

 ,      .  -
    ,      
 .       -
.        ,  -
     ,       -
  .

        -
      .     
  ,     .  
  .    ,  -
  -.