Quiz

You are hiking up a mountain whose altitude f and the point (x,y) can be modeled by the function

        f(x,y)  =  11,000 + x - 2y - x² - y²

You are currently at the point (20,30).  In what direction should you make your first step so that you are making the steepest ascent?  You may state your answer by giving a vector that points in this direction.