I need plot this x= e^-6t(c1cosk1t+c2sink1t)
Hi Sanzhar,
There are some missing brackets.
g = Exp[-6*t]*((Subscript[c, 1]*Cos[Subscript[k, 1]*t]) + (Subscript[c, 2]* Sin[Subscript[k, 1]*t])) Plot[g, {t, 0, 1}, PlotRange -> All]