ok, thanks
i can see where the first one comes from, but if i apply the chain rule to the second one, i get
\frac{\partial}{\partial w}=\frac{-y}{w^2}\frac{\partial}{\partial x} + x\frac{\partial}{\partial y}
is this correct, or is the original correct?
ok, here is a repost
hello, i am supposed to use the two variable chain rule to confirm that changing variables from (x,y) to (v,w) with v=x and w=y/x leads to:
\frac{\partial}{\partial v} = \frac{\partial}{\partial x} + w\frac{\partial}{\partial y}
and \frac{\partial}{\partial...
hello, i am supposed to use the two variable chain rule to confirm that changing variables from (x,y) to (v,w) with v=x and w=y/x leads to:
\partial{v}=\partial{x} + w\partial{y}
and \partial{w}=x\partial{y}
it seems to me that the first line should read \partial{v}=\partial{x} =...