Consider the surface . A. Find the unit normal vector to the surface at the point with positive first coordinate.
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Originally Posted by wvlilgurl Consider the surface . A. Find the unit normal vector to the surface at the point with positive first coordinate. z = f(x, y) = 32/(xy). Evaluate $\displaystyle f_x$ and $\displaystyle f_y$. A normal vector is $\displaystyle (f_x, \, f_y, \, -1)$. Substitute x = 4 and y = 4. Get a unit vector from this in the usual way.
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