*2 C- 6 s.
<7^- *£>X &*
6*
_ i cos ( 2 ■*■ 3X^ ) + C.
_s___
s
<W
> ~ A ~ t
AA5 = cWr
A/- f
O
A*-
$ *
(r1
as')r ~s
^cosixcos|xc»Jt=:; ł £c*;(«'''- j-') + coź(l>4 » l)^“
c , sr