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Posted by **Tatoosh** on Monday, January 2, 2012 at 1:38pm.

a) Find all the point where f'(x)=0

b) Use the second derivative test to classify the stationary points?

- calculus -
**Steve**, Monday, January 2, 2012 at 4:52pmwhere do you get stuck?

f' = 4x^3 - 6x

= 2x(2x^2 - 3)

f'' = 12x^2 - 6

= 6(2x^2 - 1)

- calculus -
**Tatoosh**, Wednesday, January 4, 2012 at 2:18pmThank you so much.

and what about the stationary points ?

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