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7 :




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1.

2.

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. f () j(), , .

f ()= j(), Î .

. , , .. .

f ()= j(), ( ), . , = .

. f ()= j(), F (x) = G (x), , , , .. , , .

f ()= j() F (x) = G (x) , .

:

2 1 = 0 (1)

( 2 1)(2 1) = 0 (2)

2 1 = 0 Þ ( 2 1)(2 1) = 0 .

, (1) (2), .. {1, 1} Ì {1, 1, }. , (2) (1).

, f () =j() F (x) = G (x)(**), (**) (*). (**) (*), (*) (**). .

. , .

= , . , , = = 1Ú = 2Ú = 3 Ú Ú = n . = { }. , . , . , , :

= Þ 2 = Û 2= 0Û 1, 2= Þ =1 Ú 3 = 2.

: {2}.





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