Math Chapter Wise question with answer

Q01 If 1 x/ y u xytan (e), − = then u u x y ∂ ∂ + ∂ ∂ is equal to English · PGT 2005 Q02 If x y z x y z c, where c, is a constant, then at 2 z x y z, x y ∂ = ∂ ∂ is equal to: English · UP PCS (Pre) 1996 Q03 If 3 3 1 x y u tan x y − + = − then u u x y ∂ ∂ + ∂ ∂ is equal to: English · UP PCS (Pre) 2000 Q04 If y x u = sin + tan x y then ∂ ∂ u u x + y x y is equal to: English · UP PCS (Pre) 2001 Q05 If 1 y u tan, x − = then the value of u u x y ∂ ∂ + ∂ ∂ is English · Rajasthan TGT 2015 Q06 () () () –1 x,y 2,1 sin xy – 2 lim tan 3xy – 6 → is equal to – English · UP PGT 2021