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What is dy/du of dy/dx? Watch

1. and also dy/dx of dy/du?
2. If you are talking about the chain rule then dy/dx = dy/du x du/dx
3. I'm assuming you're referring to differential calculus. dy/dx is the relationship between the derivative of the function and x.

du/dx is usually used when a chain function is being derived, for example (10x^2+5x)^5 , where we later use the notation u^5. Thus, the derivative would be dy/du = 5u^4.

It is hard to explain it without having a specific example given. Hope it helps anyway, at least a bit. I'm sure other users can go a bit more in-depth :P
4. if you mean d/du(dy/dx) then that would be d2y/dx2*dy/du

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