Recent content by Usuiisu

I am now confused. The quantity that I want to get is that how much f(x,y) changes if you increase x by 1%. If you say, "how much f(x,y) changes if you increase x by 1 unit", then it should be ∂f(x,y)/∂x. So, what I want is: Δf(x,y)/%Δx. Can you write this as, ∂f(x,y)/∂log(x)? Then, the...

I made a mistake in the relevant questions for one of the equations: %Δf(x,y)/%Δx = ∂logf(x,y)/∂log(x)= ∂f(x,y)/∂x*x/f(x,y) should be corrent.

Homework Statement Rewrite this in terms of f, f, ∂f/∂x, and x: ∂f(x,y)/∂(%Δx) = ∂f(x,y)/∂(d log(x) ) Homework Equations ∂(%Δf(x,y))/∂(%Δx) = ∂logf(x,y)/∂log(x)= ∂f(x,y)/∂x*x/f(x,y). ∂f(x,y)/∂log(x)=x∂f(x,y)/∂x The Attempt at a Solution I found that (%Δx) can be written as...