`x(dy)/(dx)=y-x "tan" (y)/(x)`

(dy)/(dx)=1-x+y-xy

x(dy)/(dx)-y=x^(2)

(dy)/(dx)+2y=sin x

If y = tan^(-1)x show that (1+x^2)(d^2y)/(dx^2) + 2x(dy)/(dx) = 0

Find the order and the degree of the differential equation xy(d^(2)y)/(dx^(2))+x((dy)/(dx))^(2)-y((dy)/(dx))=0