1. The problem statement, all variables and given/known data A hill is described with the following function: f(x,y) = 3/(1+x2 +y2) Where f(x,y) is the height. Find the points where the hill is steepest! 2. Relevant equations ∇f(x,y) = d/dx(f(x,y))i + d/dy(f(x,y))j 3. The attempt at a solution d/dx(f(x,y)) = -6x/(1+x2+y2)2 d/dy(f(x,y)) = -6y/(1+x2+y2)2 Know as far as I understand the maximum slope should occur when: ||∇f(x,y)|| has it max. But how should I find that? And am I even going in the right direction?