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Kido

Determine algebraically where the intervals of the functions are positive or negative. f(x) = 2x^4 - 2x^3 -32x^2 - 40x
Jul 07 2011 05:25 PM
  • Sinwin's Photo
    Sinwin
    I forgot how to do math and 3rd order polynomials are too hard >.<
    Jul 07 2011 06:28 PM
  • Junsu's Photo
    Junsu
    Find the zeroes and then do the sign graph. Easier to just graph and look when the graph is positive or negative.
    Jul 07 2011 06:29 PM
  • Unseen's Photo
    Unseen
    That be easy :D
    Jul 07 2011 06:54 PM