Math Chapter Wise question with answer

Q01 Find the maximum value from the extreme values of this function: u = x2 y2 – 5x2 –8xy–5y2 English · DSSSB TGT 04-09-2021 Shift-I (Male) Q02 For the function f(x,y) defined as () 2 2 4 xy,if x,y 0 x y f(x,y) 0,if x,y 0 ≠ + = at the origin directional deriv... English · UP Higher Asst. Prof. 2021 Q03 The function f(x, y) = 3x2 y + 4y3 – 3x2 – 12y2 + 1 has a saddle point at. English · Bihar (TRE 1.0) -2023 Q04 Let f(x, y) = 2 2 2 x y x + y for (x, y) ≠ (0, 0) then English · Bihar (TRE 1.0) -2023 Q05 Let α = ∞ ∫ 2 0 1 1+ t at Which of the following is true? English · Bihar (TRE 1.0) -2023 Q06 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)