Find the general solution for the following differential equations. $X(1)y"+y=cos?(2)y"+2y\text{'}+y=e-*Inx(3)x?y"+xy\text{'}+(x2-4)y=x{y}^{\text{'}\text{'}}+y=co{s}^{2}x$

$(2)y^{\text{'}\text{'}}+2y^{\text{'}}+y=e^{-x}lnx$

$(3)x^2{y}^{\text{'}\text{'}}+x{y}^{\text{'}}+(x^2-\frac{1}{4})y=x^{\frac{3}{2}},y_1=x^{-\frac{1}{2}}cosx,y_2=x^{-\frac{1}{2}}sinx$