" (viii) "cos(xy)=x+y

find dy/dx if cos(xy) = x + y

If cos (xy) =x+ y ,then (dy)/(dx)=

Find (dy)/(dx) if,sin xy+cos(x+y)=1

Find the number of pairs of integer (x,y) that satisfy the following two equations: {cos(xy)=x and tan(xy)=y(a)1(b)2(c)4

(cos x) / (cos (x-2y)) = lambda rArr tan (xy) tan y =

If x^(3)cos(xy) + y^(3)sin(xy) + 1 = 0 "then" (dy)/(dx) equals

Find (dy)/(dx) in each of the following: sin xy+cos(x+y)=1