SOLUTION: find the number of critical points of f(x) = sqrt(x² - 4x)

SOLUTION: find the number of critical points of f(x) = sqrt(x² - 4x)

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Question 1199628: find the number of critical points of f(x) = sqrt(x² - 4x)
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
0 and 4

Look at factorization for the x^2-4x.
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