Find all the second order partial derivatives of Z=XCos(Y)-YCos(X)~Engineering Mathematics.

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This video teaches how to find all the second order partial derivatives of a function,in our case , Z=XCos(Y)-YCos(X)

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The links below refer you to past videos on:

1. TANGENCY.

2.Determining the circumference of a circle through construction.

3.Logarithm

4.Proving the total resistance formulae using two resistors , R(1) and R(2) in a parallel connection.

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