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Let w=x2+y2+z2w = x ^ { 2 } + y ^ { 2 } + z ^ { 2 }

Question 5

Multiple Choice

Let w=x2+y2+z2w = x ^ { 2 } + y ^ { 2 } + z ^ { 2 } with constraint 3xy+5z=13 x - y + 5 z = 1 . Then the minimum value of w is


A) 113\frac { 1 } { 13 }
B) 119\frac { 1 } { 19 }
C) 121\frac { 1 } { 21 }
D) 135\frac { 1 } { 35 }
E) 141\frac { 1 } { 41 }

Correct Answer:

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