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  1. mathematics
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  3. let g(x, y) = cos(x + 2y).(a) evaluate g(2, -1).g(

Let g(x, y) = cos(x + 2y).(a) Evaluate g(2, -1).g(2, -1) =(b) Find the domain...

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Calculus

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Let g(x, y) = cos(x + 2y).(a) Evaluate g(2, -1).g(2, -1) =(b) Find the domain of g.-1 ? x ? 1, -1 2 ? y ? 1 2R-? 2 ? x + 2y ? ? 2-2 ? x ? 2, -1 ? y ? 1-1 ? x + 2y ? 1(c) Find the range of g. (Enter your answer using interval notation.)

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