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calculus

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consider the function; f(x)=x^4-3x^2-1
a) Find all the point where f'(x)=0
b) Use the second derivative test to classify the stationary points?

  • calculus - ,

    where do you get stuck?
    f' = 4x^3 - 6x
    = 2x(2x^2 - 3)

    f'' = 12x^2 - 6
    = 6(2x^2 - 1)

  • calculus - ,

    Thank you so much.
    and what about the stationary points ?

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