126  5

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 (5.12),     :

^(l^-,)'-'^/,-,,,)                                      ^

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       .

  

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Pd+r^^F,                              (5.22)

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P^+r^^F,                            (5.23)

     20  .  (^)  
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1+,=(1+/-,)2                            (5.24)

,  ,  $2315,97,   $5000
  .   (5.22)  (5.23), :