The maximum value of the function f(x) = 2x^3 - 15x^2 + 36x - 48 on the set A = x x^2 + 20 9x is

JEE Advanced 2009 Mathematics question

The maximum value of the function on the set is

Answer: 7

, so A = [4, 5]. 6x^2$ - 30x + 36 =

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Question ID VK-037761