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Math Help - first and second differences

  1. #1
    Senior Member euclid2's Avatar
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    first and second differences

    calculate first and second differences of y=-5(x-2)squared+3
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by euclid2 View Post
    calculate first and second differences of y=-5(x-2)squared+3
    Please correct this question or provide the rest of it.

    RonL
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    Senior Member euclid2's Avatar
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    The first part of the question A) ; given the following graph and the values of h and h, h=2,k=3 Determine its equations (there is a picture of a parabola with given points A(0,2); out of this i got its equation to be y=-5(x-2)squared+3

    The second part(b) says to calculate the first and second differences of the equation
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    Grand Panjandrum
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    Quote Originally Posted by euclid2 View Post
    The first part of the question A) ; given the following graph and the values of h and h, h=2,k=3 Determine its equations (there is a picture of a parabola with given points A(0,2); out of this i got its equation to be y=-5(x-2)squared+3

    The second part(b) says to calculate the first and second differences of the equation
    Type it exactly as it is written please. In particular does it say diferences or derivatives or something else.

    RonL
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  5. #5
    Senior Member euclid2's Avatar
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    Part B:
    )
    11. A) Given the graph and the values of
    h and k, h = 2 ; k = 3 (graph unavailable so the point given is point (0,2) determine its equation.b. calculate the first and second differences for the equation.

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  6. #6
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    y=-5(x-2)squared+3

    im going to assume that by difference you mean derivative.

    1st derivative: -10(x - 2) via:
    d/dx of z^n = n*z^(n-1)
    i used z=(x-2) and n=2
    the 3 gets dropped because the slope of a constant is 0.

    simplify to y' = -10x + 20
    the 2nd derivative is y''=-10
    via the slope of y' is always -10.

    hope that helps
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