Suppose we have a function(adsbygoogle = window.adsbygoogle || []).push({});

[tex]u=f(x,y,z)[/tex]

If [tex]\frac{\partial u}{\partial x} = 0[/tex]

then u is independent of x and is

[tex]u=f(y,z)[/tex]

only.

Correct?

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# Partial derivative equals zero means it is constant?

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