Intervals of increase/ decrease of a function

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  1. bijesh12's Avatar
    1 16-05-2012  21:49
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    Intervals of increase/ decrease of a function
    Need help on question 15 on attachment...
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  2. nuodai's Avatar
    2 16-05-2012  21:51
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    Re: Intervals of increase/ decrease of a function
    g is just a cubic polynomial, and you should (from A-level C1 or equivalent) be able to work out where a cubic is increasing and decreasing.
  3. bijesh12's Avatar
    3 16-05-2012  21:53
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    Re: Intervals of increase/ decrease of a function
    How do i get into a function from the matrix, how do you know it's cubic ?
  4. bijesh12's Avatar
    4 16-05-2012  21:57
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    Re: Intervals of increase/ decrease of a function
    Ah Sorry, i don't know what i was thinking, i kept on thinking that's a matrix, rather than the determinant!!
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