1. , .
2. k. C x0 C y0, . U (t *) . U (t *) C x0 ( ) (5), k 1.
3. . C y0 C y. , k 2.
4. k 1 k 2. 5 % . 2 . 3 , .
5. ( C xi C yi ). " Cx ", , . U (t *) (5), k, C xi.
6. " Cy ", - , . Cy i Cx i.
7. (C) (C) , , Cx i Cy i, . . , Cx i Cy i.
8. , , , .
9. Cx i Cy i (3), Cx i Cy i, , R = 20 .