 19  21-36  , ,  , 36 , 2027
 


  -2027   .     19    ,   .            .

            .

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   ,      .

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 19  21-36  , ,  , 36 , 2027





 1


19-21-2027

   ,      , 

 y =   + 2  y = ||+||,   7,    3.
















 2


19-22-2027

   a,      ,  

y =   +    = ||   ,   6,    12.





















 3


19-23-2027

   ,      










.      > 0 : 1   =   ; 2   =  ;

3-   =  + ;  4-    =   ,  =   + ,     ;

      = (1)


  4.  ,    = 1 +   =>  ? 1.

  ( = 1)    , .

    ,    ,    ,   = 3       .

  < 0    ,  ,     = -3,    D,  .

  <  3   ,     ,   ;   3?  ?0             ;    [3;3).

: [3;3).























 4


19-24-2027

   ,      










  2 .

.      > 0 : 1   =  + ; 2    =   + ;

3   =   ; 4     =  + ,  =    ,     ;

      = 9  (  4)


.  ,  

 = 4 + (9-y)^(1/2) =>  ?  4.

  ( = 5)    (4;9),  .

    ,     ,    ,     .

  < 0    ,  ,     = 7,     =7,  < 7   ,    ,   ;   7 <  < 0              ;

  (7; 5].

: (7; 5].
















 5


19-25-2027

  ,      










   .

























 6


19-26-2027

   ,     






   .

.     :












 (1)   O(5 ;7)  0, 5   =0; 

        | 0,5  | = r.

 (2)  ,    , 

 :  + 2 + 4 = 0;   2 + 6 = 0;   2 = 0;  + 2  2 = 0,

       (2).

    r







  .


   .

   ,     (https://www.litres.ru/book/sergey-voronov-33860142/reshenie-19-zadach-21-36-variantov-ege-matematika-profil-fi-74645218/)  .

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