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anonymous
 5 years ago
Find all of the critical numbers for the function f(x) = x^3 – 8x^2 + 11x + 20
anonymous
 5 years ago
Find all of the critical numbers for the function f(x) = x^3 – 8x^2 + 11x + 20

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0critical numbers eh.... no interval to worry about?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0f'(x) gives us some good numbers...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0f'(x) = 3x^2 16x +11 now make this equal to zero to determine our critical numbers...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.016 + sqrt(16^2 (4)(11)(3))  2(3)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.016 + 2sqrt(31)  if I did it right 6

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0you should have an inflection point at 16/6 thats critical as well

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay I understand now, you used the quadratc equation,right?
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