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f(c) is the maximum value of f on [a, b] if ๐‘“(๐‘)โ‰ค๐‘“(๐‘ฅ)

Question

f(c) is the maximum value of f on [a, b] if ๐‘“(๐‘)โ‰ค๐‘“(๐‘ฅ)

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Solution

The statement you provided seems to be a bit contradictory. If f(c) is the maximum value of f on the interval [a, b], then f(c) should be greater than or equal to all other values of f(x) for x in [a, b], not less than or equal to.

So, if f(c) is the maximum value of f on [a, b], the correct relation should be ๐‘“(๐‘)โ‰ฅ๐‘“(๐‘ฅ) for all x in [a, b].

Here are the steps to find the maximum value of a function on a closed interval [a, b]:

  1. Find the derivative of the function, f'(x).
  2. Set the derivative equal to zero and solve for x to find critical points.
  3. Evaluate the function at its critical points and endpoints.
  4. The largest value is the maximum value of the function on the interval [a, b].

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