For  y= (x^4/4)-(x^3/3)-2   (a) Find y' =f'(x). (b) Find the critical values. (c) Find the critical points.  (d) Find intervals of x-values where it is decreasing. (e) Classify the critical points as relative maxima, relative minima, or horizontal points of inflection.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter9: Multivariable Calculus
Section9.3: Maxima And Minima
Problem 19E
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For 

y= (x^4/4)-(x^3/3)-2

 

(a) Find y' =f'(x).

(b) Find the critical values.

(c) Find the critical points. 

(d) Find intervals of x-values where it is decreasing.

(e) Classify the critical points as relative maxima, relative minima, or horizontal points of inflection. 

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