calculus

use the graph of f(x) in the graph to find the sign (positive or negative) of dy/dx and d2y/d2x at the points A,B,C, and D

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  1. We don't see the graph, nor a definition of f(x). Could you complete the information?

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    posted by MathMate
  2. The graph of a function
    y = f(x)
    is shown. At which point(s) are the following true? (Select all that apply.)

    (a)
    dy
    dx
    and
    d2y
    dx2
    are both positive.
    A
    B
    C
    D
    E


    (b)
    dy
    dx
    and
    d2y
    dx2
    are both negative.
    A
    B
    C
    D
    E


    (c)
    dy
    dx
    is negative but
    d2y
    dx2
    is positive.
    A
    B
    C
    D
    E

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    posted by sine

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