Step 1 :Find the partial derivatives of the function with respect to x and y:
Step 2 :\(\frac{\partial z}{\partial x} = -6x\)
Step 3 :\(\frac{\partial z}{\partial y} = -8y\)
Step 4 :Evaluate the partial derivatives at the point (2,1,16) to find the normal vector:
Step 5 :\(\vec{n} = (-12, -8, 1)\)
Step 6 :The equation of the tangent plane is:
Step 7 :\(-12x - 8y + z - 4 = 0\)
Step 8 :A vector perpendicular to the tangent plane is:
Step 9 :\(\vec{v} = (-12, -8, 1)\)
Step 10 :The tangent plane is horizontal at all points in the xy-plane.