Math Chapter Wise Limit, Continuity And Differentiability Of Function Of Two Variables And Partial Differentiation English MCQ PGT 2004 Q.If u=xn-1 y f(y/x), then 2 2 2 u u x y x ∂ ∂ + ∂ ∂ ∂ is equal to? Anu Bn(n - 1) u C(1) ∂ − ∂ u n x D(1) ∂ − ∂ u n y Show answer Correct answer: (1) ∂ − ∂ u n x