Let , where: , and . Use the chain rule to find at .

The Chain rule formula I used is the following:

And, when ,

When ,

. This is one correct?

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- Apr 13th 2010, 02:30 PMBelowzero78Chain Rules - Partial Derivatives
Let , where: , and . Use the chain rule to find at .

The Chain rule formula I used is the following:

And, when ,

When ,

. This is one correct?

- Apr 13th 2010, 05:36 PMdwsmith
- Apr 13th 2010, 06:32 PMBelowzero78
Could someone please show me what the partial is for: ?

I'm really confused about the y^tan(x) part when taking the derivative of x.

Would it be: ? - Apr 13th 2010, 06:50 PMdwsmith
For example, can be solved like this:

and

Therefore,

If this example doesn't help you with, then just ask. - Apr 13th 2010, 06:52 PMBelowzero78
Ok, after this how do i evaluate dz/dt? Like what stuff do i plug in?

- Apr 13th 2010, 06:54 PMdwsmith
Add your solutions of the partial derivatives you obtain.