2. f(t) =t cos 81 +2

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A: We will find out the required value.

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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Q: Hence evaluate

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A: see below the answer

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A: Explanation of the solution is given below...

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Q: c) Let f(x, y,z) = cos (xyz)sin(x²y=

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Q: 2. f(1) =t cos 81 +2

A: