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Solve the Problem x2+y2+z2=4x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = 4

Question 214

Multiple Choice

Solve the problem.
-Find the point on the sphere x2+y2+z2=4x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = 4 that is farthest from the point (3,1,1) ( 3,1 , - 1 ) .


A) (611,211,211) \left( - \frac { 6 } { \sqrt { 11 } } , - \frac { 2 } { \sqrt { 11 } } , - \frac { 2 } { \sqrt { 11 } } \right)
B) (611,211,211) \left( - \frac { 6 } { \sqrt { 11 } } , \frac { 2 } { \sqrt { 11 } } , - \frac { 2 } { \sqrt { 11 } } \right)
C) (611,211,211) \left( - \frac { 6 } { \sqrt { 11 } } , \frac { 2 } { \sqrt { 11 } } , \frac { 2 } { \sqrt { 11 } } \right)
D) {611,211,211) \left\{ - \frac { 6 } { \sqrt { 11 } } , - \frac { 2 } { \sqrt { 11 } } , \frac { 2 } { \sqrt { 11 } } \right)

Correct Answer:

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