" If "x=r cos thetaquad y=1" sin "0" then value of "(del(alpha,y))/(del(r,Q))

If x = r cos theta, y = r sin theta then prove that (del (x, y)) / (del (r, theta)) xx (del (r, theta)) / (del (x, y)) = 1

If x = r cos theta, y = r sin theta, Find (del (x, y)) / (del (r, theta)), (del (r, theta)) / (del (x, y))

If x = r cos theta and y = r sin theta, prove that (del ^ (2) r) / (del x ^ (2)) + (del ^ (2) r) / (del y ^ (2)) = (1) / (r) [((del r) / (del x)) ^ (2) + ((del r) / (del y)) ^ (2)]

If x= r cos theta, y = r sin theta , then (del r)/(del x) =_________

If V(x,y) = e^(x) (x cos y - y siny) , then prove that (del^(2)V)/(del x^(2)) + (del^(2) V)/(del y^(2)) =0

If x = r cos theta, y = r sin theta, r =a(1+cos theta) then find (dy)/(dx)

How is the partial differentiation of y is (del(y))/(del(m))

If u= y sin x then (del^(2)u)/(del x del y) =___________