What is the derivative of f(x) = 3x^4 - 8x^3 + 2x^2 - 6x + 11 with respect to x?
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Math Question: Find the extreme values of the function f(x) = x^3 - 6x^2 + 9x on the interval [0, 4].
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Question: What is the mixed number representation of the improper fraction 7/3? How do you factor the number 72 into its prime factors? Identify a real number that is both rational and irrational.