[2],.4; [8],.3,2;[10]
, - (), . ( : , =0 + =0, x =, = 0).
7. . .
: . (3; 0) .
, , , (5,0). :
= 5 , , . . , (..2).
, . ( ).
8.
, ,
|
|
|
: z, z 2 (.). . , z, . ,
(.4), , . (0; 0; 2) , , , , .
, , . z=1
, , , .5.
9. ,
, . , .
|
| |||||
| ||||||
: + = 16 , 4 (.6). ( - z), "" ( z = 0) (.7). , , . , . x . , .
|
|
.8 , , , z, R = 4, z = 2 z = 2.