Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ UPPSC GDC 2021 Q.If Ai is a covariant vector, then which of the following is correct? Ai j A x ∂ is a covariant tensor Bi j A x ∂ is a contravariant tensor Ci j A x ∂ is not a tensor Di j A x ∂ is a mixed tensor Show answer Correct answer: i j A x ∂ is not a tensor