Math Chapter Wise Limit, Continuity And Differentiability Of Function Of Two Variables And Partial Differentiation English MCQ PGT 2005 Q.z = φ (x + iy) + ψ ψ ψ (x – iy) is a solution of partial differential equation: A2 2 z z 0 x y ∂ ∂ − = ∂ ∂ B2 2 z z 0 x y ∂ ∂ + = ∂ ∂ C2 2 2 2 2 z z z 0 x y ∂ ∂ ∂ + + = ∂ ∂ DNone of these Show answer Correct answer: 2 2 z z 0 x y ∂ ∂ + = ∂ ∂