tfn(*) = flo + ^l(^- ^o) + ^2 ^o)2 +- + fl*ł-lC;t-:to)“ł"1 +
+ (x-*(,)“■ [flMł +flMł+i(jr-JTi) + flMł+3 (JT-JTi)3 + ...+ flMł+M|_1(jr-JT1)“I"1] +
+...........................................+
+ Wt+W| + ...+Wi.l +...+ a Ht+H| +Wł+...+ W4 -l(*“ Xk) W*-l-