Question

61. If fx and fy are both differentiable at a point (a, b), then by Young's theorem:
(A) Sxy(a,b) = fyx(a,b)
(B) Ưy(a, b) = - x(a,b)
(0) Sy(a,b) f(a,b)
(D) None of these​

Answer 1

Answer:

(o) sy(a,b) f(a,b) ..,........