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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)
DileX123inspires: There are people with half your talent who are doing far better than you, WAKE UP!
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.
DileX123inspires: There are people with half your talent who are doing far better than you, WAKE UP!
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.