                     襭 
                     -------------

5.2.9.  9 (5 ) 㪠 .
।  襭: 4.3 (87%)

   । 5
   -------------
   㤥 ᬠਢ        ᯮ⥫ 
 . न 窨 뢠   
孥 㣫      窨  ᪮-
 ன ᥫ (x,y). ᫮ x -  ப,  y -  ⮫-
,   祭    ᯮ ⪠-窠. ࢮ
᫮ x 㤥 뢠 ப 窨, ஥ y  - ⮫殬 -
. 窨  㤥  묨 ⨭᪨ 㪢, ਯ-
  ,   砥  室, न. 窠 o, ᮮ-
 ࢮ  ⪥    ࢮ  ப,  न
(1,1).  ࠧ,  砥  o(1,1).

   । 6
   -------------
   ਧ⠫ १   㪠  㯮冷祭-
  祪,    ப.    ⮬  ⮫
ࢮ 窨   ⮫ ன.  १ 㤥 -
  ⨭᪨  㪢  - ﬨ 祪,  ࠧ-
.   室    ᪮  㪠뢠 न
祪, ⤥    㣠 ⮩.
   ਬ, ਧ⠫  १, ࠧ㥬   窠
a(x,y1)     b(x,y2),            ab    
ab((x,y1),(x,y2)).
     ਧ⠫쭮  १  ab((x,y1),(x,y2))  
᫮ y2-y1.   ਧ⠫ १ 㤥 
Pab  Pab((x,y1),(x,y2)).  ࠧ,  :
                 Pab((x,y1),(x,y2)) = y2-y1
   㤥 ,   窠  t(t1,t2)   ᯮ⥫ -
 ਧ⠫쭮 १ ab((x,y1),(x,y2)), ᫨:
                      t1 = x
                      y1 <= t2 <= y2
(१ "<=" 祭  "  ࠢ")

   । 7
   -------------
   ⨪ १   㪠  㯮冷祭
 祪,   ⮫.   ⮬ ப ࢮ
窨   ப ன. १ 㤥  
⨭᪨ 㪢 - ﬨ 祪,   ࠧ.  -
室  ᪮  㪠뢠 न 祪, ⤥
   㣠 ⮩.
   ਬ,  ⨪ १,  ࠧ㥬    窠
a(x1,y)     b(x2,y),            ab    
ab((x1,y),(x2,y)).
    ⨪쭮 १ ab((x1,y),(x2,y))  ᫮
x2-x1.     ਧ⠫ १ 㤥  Pab
 Pab((x1,y),(x2,y)).  ࠧ,  :
                 Pab((x1,y),(x2,y)) = x2-x1
   㤥 ,   窠  t(t1,t2)   ᯮ⥫ -
 ⨪쭮 १ ab((x1,y),(x2,y)), ᫨:
                      x1 <= t1 <= x2
                      t2 = y
(१ "<=" 祭  "  ࠢ")

 .
   㪢 a   b   ᯮ⥫ ࠧ ਧ⠫ -
१ ab.  砫  㪠 ᯮ  ⮬ १-
 ࠧ  㪢 a.
    ணࠬ,   ⠢ 㪠   -
 㣮 , ஥   १  ab    孥
 ஭.
   ਬ.  ⠪ ᯮ 㪢 a  b  :
                    1 2 3 4 5 6 7 8 9
                   
                 1          
                   
                 2  a   b  
                   
                 3          
                   
                 4          
                   
                 5          
                   
                 6          
                   
                 7          
                   

㪠   ⠭   (7,7):

                    1 2 3 4 5 6 7 8 9
                   
                 1          
                   
                 2  a    b  
                   
                 3          
                   
                 4          
                   
                 5          
                   
                 6          
                   
                 7         
                   


 襭

   ᬮ   祭    ᠭ  , 襭 祭
⮥   ᠬ ᫮  ᪮쪮 ࠧ.
   ⬨᪠  :   ४ᨢ  ६  ᯮ⥫
ࠢ  㪢  b,    .  ᯮ⥫
⮫ 㡨, ⠢ 㪢  b      "㦨-
",   믮  .


                   ४  
    <Ŀ ᯮ⥫  ࠢ  㪢 b,
                       ᦨ ४ᨢ "㦨".
  b  ⠭b        楤 ⠭b 頥 㪢 b
      ٳ  .
          < ⫮ .  ࠡ⠥ ⮫쪮
                          ࠧ, ᪮쪮 ࠡ⠫  .
                             
// 㪢 b ⠢  ⮳ 㪢 b  .
 ⠭b               
                         
  2             
                        
                        
                         
                        
                        

 ஢ 믮 ணࠬ

                                
 砫 ࠡ ணࠬ        ..a...b..
                                  ..........
                                  ..........
                                  ..........
                                  ..........
                                  ..........
                                
 ࠡ 楤        ..a....b.  ᯮ⥫ 믮
   ४ᨨ  ⢨      ..........     ࠧ.
:                            ..........  ⢥⢥ 
                                  ..........  4  .
    <Ŀ          ..........
                           ..........
  b  ⠭b          
            
                            
                           
                                
  ᯮ⥫  ⮫  b, 
ࠢ ।   - 
 ⠭b:                
                                
                      
                          
  b  ⠭b Ŀ       
                   
                           
                          
                               
       
V                                ..a....b..   । ᫥ 믮
 ⠭b                   .........   楤 ⠭b.
                             ..........
  2                 ..........
                            ..........
                            ..........
                            
                           
                           
                                
  楤      ..a....b..   । ᫥ 믮
稫.  稭     ..........   ⫮  .
ࠡ ⫮       ..........
.        ..........
.                          ..........
                                 .........
                                


     ᠫ ᢮  襭   ᠭ 
. ணࠬ ⫨     㣠 ⥫묨
⠫ﬨ.
