$$\text { Find the maximum value of } Q ( x ) \text { subject to the constraint } _x T _ { x = 1 } \text {. }$$
-$$Q ( x ) = 2 x _ { 1 } ^ { 2 } + 9 x _ { 2 } ^ { 2 } + 5 \times \frac { 2 } { 3 }$$
A) 2
B) 18
C) 5
D) 9

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The Answer of $$\text { Find the maximum value of } Q ( x ) \text { subject to the constraint } _x T _ { x = 1 } \text {. }$$
-$$Q ( x ) = 2 x _ { 1 } ^ { 2 } + 9 x _ { 2 } ^ { 2 } + 5 \times \frac { 2 } { 3 }$$
A) 2
B) 18
C) 5
D) 9

Find the maximum value of Q(x) subject to the constraint xTx=1. \text { Find the maximum value of } Q ( x ) \text { subject to the constraint } _x T _ { x = 1 } \text {. } Find the maximum value of Q(x) subject to the constraint x​Tx=1​.

$\text { Find the maximum value of } Q ( x ) \text { subject to the constraint } _x T _ { x = 1 } \text {. }$