A manufacturer can produce 4320 cell phones when a dollars is spent on labor and y dollars is spent on capital. The equation that relates x and y is 80x y 4320. dy a. Find a formula in terms of x and y for dx dy da b. Find the value of of dy dx at the point (81,16). Round to 4 decimal places.

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A: We have to find the power series representation for given function.

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A: To find which of the given equation is possible equation for the trigonometric function.

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A: Please see the below picture.

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A: Please see the below picture for detailed solution.

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Q: Can this also be solved using the mean value theorem? Thanks!

A: Given.

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A: The answer is given in step 2.

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