a) makes horizontal traces, shows the development and graph b) make three vertical traces, show the development and graph c) what name is assigned to this type of surface and why?

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A: Solution of the exact differential equation.

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A: Solution :  Given that  1 + 4 = 5  2 + 5 = 10  3 + 6 = 21  8 + 11 = ?

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Q: A model created by an engineer is represented by the following multivariable functions (a) Find Oe…

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A: The solution is given below. Hope this helps.

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