AE
H
AS*
AS
d«
AZ
2-Ącis
7 krę. (Si ?)Vz-t o~ A S
7r (rr + A*)2- TT*2 =* w(/rZ-k'2rrM +drr'Ł TT ( 2rt~A*~ -+• A* J 4 J
AS dS ◄— !
AS = 2rrr4^ *— !
2: <r Z-TT-r
kws. («t+2t)3/*