wht does this sign mean?

brandy

([itex]\frac{\partial z}{\partial x}[/itex])_y

the small y, what does it mean.
the context this is used in is F(x,y,z) where each variable is a function of the other 2 variables.

D H

It means that y is to be deemed a constant while taking the partial of z with respect to x.

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brandy	wht does this sign mean? Tweet ([itex]\frac{\partial z}{\partial x}[/itex])_y the small y, what does it mean. the context this is used in is F(x,y,z) where each variable is a function of the other 2 variables.

D H Mentor	It means that y is to be deemed a constant while taking the partial of z with respect to x.