-2   -30  -15,    -170/250

:

, -1.0 1,0 3

     , -1.0 1,0 3, 380 ., (3180*1350*630 (1100) / 2500 .

. , , 2 .

  ,   -1.0 1,0 3


  ,   -1.0 1,0 3



, -1.0 1,0 3 40440 P =.


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