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1 sin (4) if r 0 f(x) = if x = 0 (a) Prove that -1 < f(x) < 1 for all x. (b)

1 sin (4) if r 0 f(x) = if x = 0 (a) Prove that -1 < f(x) < 1 for all x. (b) Determine the value of limo f(x) if it exists. If it does not e explain why.

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