777777
cx(t) + kx(t) = mż(t) + cż(t) + kz(t)
csx(s) + /o:(s) = ms2z(s) + csz(s) + fcz(s) x(s)(cs + fe) = z(s)(ms2 + cs 4- kz)
cs+/e
ms2+cs+/c