Page 42 - aljaber

@ @RY@ @†a‡Èÿa@ @

( ) 7 ( ) 5 ( ) 3 ( ) 1 ()

5 9
4
[AJHSME 1992] ( )
11 ( )
13 ( ) 11 ( ) 10 ( )
5
12 4 8
28 ( )
16 ( ) [AJHSME 1992] ( )

{−16,−4, 0,2, 4,12}

12 ( ) 10 ( )

.a +b −c a [AJHSME 1992] ( )
bc

12
34+ 5 6

1() 0( ) −1 ( ) −2 ( )
91 ( )
[AJHSME 1993] ( )
4() )
77 ( ) 51 ( ) 39 ( )

: ∗ [AJHSME 1993] (

∗ 1234 .3∗2 =1
1 12 3 4
22413
33142
44321

(2 ∗ 4) ∗ (1 ∗ 3)

3( ) 2( ) 1 ()