Math Chapter Wise question with answer

Q01 If 2 2 1 2 2 x y u sin x y − = + then u u x y ∂ ∂ + ∂ ∂ equal to English · PGT 2011 Q02 If 2 2 1 x y f sin x y − + = + then f f x x y ∂ ∂ + ∂ ∂ is equal to English · Rajasthan TGT 2011 UP PCS (Pre) -1994 Q03 If y x u = sin + tan x y then ∂ ∂ u u x + y x y is equal to: English · UP PCS (Pre) 2001 Q04 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) Q05 If L= → 2 2 (x,y) (0,0) sin(x + y) lim x + y and () → 2 2 (x,y) (0,0) x – y M = lim,then - x + y English · UPPSC Polytechnic Lecturer 2021 (I) Q06 If u = sin-1 1 1 1 2 3 3 1 1 2 2 x + y x + y then ∂ ∂ u u x + y x y is: English · Haryana PGT 2018