Sketch the graph of a function f such that f(x) < 0 for all |x, f (x)

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Sketch the graph of a function f such that f’(x) < 0 for all |x, f” (x) > 0 for | x | > 1, f”(x) < 0 for | x | < 1, and lim x→±∞ [f(x) + x] = 0
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