Problem 4 Let f(x) - 7 cos(31) — 2. (a) What are the smallest and largest possible values for f(z)? Show at least one line of work, a sketch, or an explanation. (b) What is the domain and range for f(x)? Domain: smallest: largest: Range: (e) What is the period of f(z)? Show at least one line of work or reasoning. Period:

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