Wzór-3:- f(t)= cos cot aRcs > 0[fl
F(^) = L (/(0} = f f(t) e~"dt = | cos cot-e "dt
o o
e-" 1 (-s cos cow + co sin (ów) -
s2 + co2
-st
~2-2 (~S + 0)
S* + C0‘ '
■ (—j cos cot + co sin cot)
s
=
Oh s-2
s'+co2_