dy (b) d²y dx2 and are both negative. dx d²y is positive. dx2 dy (c) is negative but dx ш ш The graph of a function y = f(x) is shown. At which point(s) are the following true? (Select all that apply.) D B х dy (a) dy and are both positive. dx dx2 dy dx d²y dx2 (b) and are both negative. dy is negative but dx dy is positive. dx2 (c) B. Ш B. Ш

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