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Mathematics 9 Online
OpenStudy (anonymous):

let f(x)=(x^3)+(px^2)+(qx) a) find the values of p and q so that f(-1)=-8 and f'(-1)=12. (answer: p=-2 and q=5) b)find the value of p so that the graph of f changes concavity at x=2. (answer: p=-6) C) UNDER WHAT CONDITIONS ON P AND Q WILL THE GRAPH OF F BE INCREASING EVERYWHERE? (I don't get this problem...) thanks!

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