Question 4: (8 points) Format: • If your answer is a point, enter it in the form (x, y, z) (using brackets and commas). • Give your answers in exact form.

Find the minimum and maximum points of on the sphere and the value off at those points. a. Show/hide Minimum point: (z, y, z)min Minimum value: f(x, y, z) min b. Show/hide f(x, y, z)=2x-2y + 5z +7 Maximum point: (z, y, z)max = Maximum value: f(x, y, z)max = 2² +8² +2²=9