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3-118.
  1. Choice: If f ′(x) = 6x2 − 4, then which of the following could be f(x)? Homework Help ✎

    1. f(x) = 2x3 − 4x + l

    2. f(x) = 2x3 − 4x − 4

    3. f(x) = 2x3 − 4x + 4

    4. f(x) = 2x(x2 − 2)

    5. All of these

Work backwards. Find the derivative of each distractor.