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(9 .)
Lis-Edu.Kz 23:46 5 2013 . : 3667

. .

 

.I . : , 1,  n n+1, d,  n. , ; . .

II  .    , - , - . .(1., 5., )

III.: , , , .

 

: ,

    .. { n }. n=f(n), n=1,2,3,4,…, n+1, n.+2,…-

1

2

…………………………………………

n+1 = n+ d ( . .)

 

 

I. :

 ) , ) , ,

) - , -14, 18, 19

II  

: /, , - .

1) .. 2) 156() 1;3;5;7;… 1, 2, 3, 4,   ..? 3 1 (5 3, 7 5)? 2? ?

1=1                             

                    2= 1+2= 1+2=3           2=3-1= 21                     2-                                                                                                                                              

                    3= 3+2= 2+2=5           2=3-1= 32                             ..

                    4= 5+2= 3+2=7           2=3-1= 4

. . .

III . , , .

 

1. / , ..        

               

                    1                             

                    2= 1+ d                      d = 21                     d -                                                                                                                                              

                    3= 2+ d                      d = 32                             ..

                    4= 3+ d                      d = 43                      ( - d)

                    …………………………………………………………..

.58,    ( ). . , .

2. , 167() , , . 1, 2 .

:   1, 2, 3, 4, 5, …       

                                             

           3,  0,  -3, -6,-9, …

{n}- ?

: 1) d, 2) - , d?

. d = 2

                           d= 21= 0-3=-3

                 d= 32 = -3-0=-3 

                 d= 43=-6-(-3)=-6+3= -3  

                 d= 54=-9 –(-6)=-9+6= -3

d = 2

            d= 0-3=-3     

 2= 1+ d = 3+(-3) =  0

 3= 2+ d = 0 +(-3)= -3  

 4= 3+ d =-3+(- 3)= -6    -                              

 5= 4+ d =-6+(- 3)= -9 

: {n}-          .

: d

: 25 ? n?

166() 4, 1= 130, d= -3

 2= 1+ d = 130+(-3) = 127

 3= 2+ d = 127 +(-3)= 124  

 4= 3+ d = 124+(- 3)= 121. , …

IV

§10, .57, , 167(), 165(), 6 . 60 . . 

V

167() , ,

 

. .

d = 21  =

2= 1+ d =

d = 32  =

3= 2+ d=

d = 43  =

4= 3+ d=

d = 54  =

5= 4+ d=

 

,

 

 

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