Find the critical numbers of the function. f(x) = 9x^2 - 8x Step 1 To find the critical numbers of f, you must find all x-values for which f'(x) = 0 or f'(x) does not exist. Step 2 Begin by differentiating the given function with respect to x. f'(x) =
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\[f'(x) = 18x\] ** Show more…
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