Find the special solutions of the following differential equations that satisty the given initial conditions

$()y^{\text{'}}=e^{2x-y},y{|}_x|=0=0$;

$(2)cosxsinydy=cosysinxdx,y{|}_x|=0=\frac{}{4}$;

$(3)xdy+2ydx=0,y{|}_x|=2=1.$