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#### find_the_fun

##### Active member

- Feb 1, 2012

- 166

\(\displaystyle \frac{\partial z}{\partial x}\) it's unclear which x is being referred to. Is this right? If no does anyone else know of an amibguity that arises?

- Thread starter find_the_fun
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- Thread starter
- #1

- Feb 1, 2012

- 166

\(\displaystyle \frac{\partial z}{\partial x}\) it's unclear which x is being referred to. Is this right? If no does anyone else know of an amibguity that arises?

- Feb 29, 2012

- 342

$$\frac{\partial f}{\partial x} = \frac{\partial f}{\partial u} \frac{\partial u}{\partial x} + \frac{\partial f}{\partial v} \frac{\partial v}{\partial x}.$$

Note that $f$ has distinct meanings on each side. Another usual notation is $f_x$.