4(a)Verify that the equationy=lnx-lny is an implicit solution of the IVP,

                 ydx=x(y+1)dy    

                           y(e)=1                                        

   (b) Consider theIVP, test whether it is exact and solveit.    

            x(x-y)dy=-(3xy-y^2)dx                  

                     y(-1)=1                                       

(c) Determine the degree of thefollowing homogeneousfunction                                                

      (i)f(x,y)=4x^2+2y^4,                                     

      (ii)f(x,y)=√5x^6-3y^6+4x^2y^4,