Math Chapter Wise question with answer

Q01 If f(x) = sin x + cos x, then the maximum value of f(x) is: English · KVS PGT 2023 Q02 If xy = c2 then the maximum value of ax + by - English · TGT 2001 Q03 If x+2y=8, then the maximum value of xy is English · LT 2018 Q04 If the function ((()) 1 f x asinx sin3x 3 = + = + has maximum value at x 3 π = then the value of a is: English · PGT 2011 Q05 If (((()))) 1 2 2 3 f(x) 3 x x = − = − then the maximum and minimum values of f(x) are respectively: English · PGT 2002 Q06 Given that x + y = 20 and P = x2 y3. Then P is maximum when? English · UKPSC Lecturer (Mains) 2020