                                        565

g^r(l-p).                            (18.516)

   ,    g  : 1)  , 
 (1  )', 2)       .

     ,  -
 (18.20),      gna ,  
   (18.516),    :

,{^+8\.^\^(\-)}    \\     1

 ^-  ~ """  1   -\  .              /1 <Ti

[k-gj   '[k-rd-p)}   '[k-rd-P)!          ^-^

     (, ,  )  
     ,      
 .



    Copper, ,   = $2,70   = 662/%. 
,  33'/3%           -
,   $0,90 (0,3333  $2,70).      
 ^    $2,835 ($2,70  (1 + 0,05)),    g 
  5%.

     ,   $0,135 ($2,835 -
 $2,70),   $0,90  ,      -
 /= 0.       /- 15%, 
$0,135/$0,90 = 15%.  ,     $0,90  -
       , 
   $0,135.         -
  / = 1,     t = 2, t = 3  ..  ,  
 $0,90    t = 0     
    $0,135,     t = 1.

     t = 1    -
    (62/%)       $2,835, ..
0,6667  $2,835 = $1,89.      ,
 1    g (5%)        
  = $1,80, .. 1,05  $1,80 = $1,89.

 ,        (5%)  
  (331/%)       
(15%),     5% (0,3333  0,15).

      (t = 2)      
 $2,977 [$2,835  (1 + 0,05)].   $0,142 ($2,977 - $2,835) 
     $0,945 (0,3333  $2,835)     
 t = 1.        ($0; 142)  
,    ,  0,15  $0,945 = $0,142
(15%        ; 0,945  
      ).

        t = 2  
    .     ,    ,
     t = 0 ($2,70).     , -
    $0,90    t = 0,  $0,135.
        $0,945    t = 1,
 $0,142.    ,  ,   
?, = $2,977 ($2,70 + $0,135 + $0,142).

    t = 2   5% ,    -
  = 1;   $1,985 (1,05  $1,89)   .   

19 1147