- #1

transmini

- 81

- 1

##(\frac{\partial{w}}{\partial{x}})_{y} \neq (\frac{\partial{w}}{\partial{x}})_z##

where ##w=xy## and ##x=yz## and the subscripts are what variable is held fixed.

I'm just not sure what it means by holding a variable "fixed" since all other variables except the two in question are treated as constants, so why would it matter whether ##w## is a function of ##(x, y)## or a function of ##(x, z)##

I mean I see that the partial derivatives don't match up, but don't really see why the variables make a difference since they are the same function.