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lovekblue

  • 3 years ago

How many criticals in x^(4/5) (x-4)^2

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  1. tkhunny
    • 3 years ago
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    Have you considered the 1st Derivative?

  2. lovekblue
    • 3 years ago
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    i know the answer is 3..but dont know why

  3. seitys
    • 3 years ago
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    criticals are where the first derivative is 0 or does not exist within a given domain. I recognize this problem from the stewart textbook hah

  4. tkhunny
    • 3 years ago
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    Well then, what do you get for the 1st Derivative?

  5. mark_o.
    • 3 years ago
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    if y=x^(4/5) (x-4)^2 what is dy/dx ? then set up dy/dx=0 solve for x=? thats your critical poits

  6. robtobey
    • 3 years ago
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    A plot is attached. The red curve is the derivative of the blue.

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