Math Chapter Wise question with answer

Q01 If 2 xy z = e,x = tcost,y = tsint, then the value of dz π at,t = is - dt 2 English · UPPSC Polytechnic Lecturer 2021 (I) Q02 If x = rcosθ, y = rsinθ, Then the value of 2 2 x y ∂ θ ∂ θ ∂ θ ∂ θ ∂ θ ∂ θ ∂ θ ∂ θ + ∂ ∂ is: English · PGT 2000 Q03 If x = r cos θ, y = r sin θ, then the value of ∂ (x, y) (r, θ) is: English · UP PCS (Pre) 1999 Q04 If z = x2 + 2y2, x = r cosθ, y = r sinθ then z ∂ ∂θ is English · UP PCS (Pre) 2009 Q05 ∫ 2 2 dx sin x.cos x equals English · EMRS TGT-2023 Q06 If ((())) ((()) f x cos logx = then (((()))) + × x f f x y y equal to. English · PGT 2013