Math Chapter Wise Tangent, Normal, Increasing, Decreasing And Maxima/Minima Of A Function Of One Variable English MCQ PGT 2011 Q.If the function ((()) 1 f x asinx sin3x 3 = + = + has maximum value at x 3 π = then the value of a is: A3 B1/3 C2 D1/2 Show answer Correct answer: 2