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Let the function f:(0,7) R be defined by f(0) = (sin0 + cos0) + (sin0 - cos0)4. Suppose the function f has a local

Let the function f:(0,7) R be defined by f(0) = (sin0 + cos0) + (sin0 - cos0)4. Suppose the function f has a local minimum at 0 precisely when 0 = {,...,}, where 0

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