Let \( P \) and \( \mathrm{Q} \) are two points in the \( x y \) pl...
Let \( P \) and \( \mathrm{Q} \) are two points in the \( x y \) plane on the
\( \mathrm{P} \) curve \( y=x^{11}-2 x^{7}+7 x^{3}+11 x+6 \) such that
W \( \overrightarrow{\mathrm{OP}} \cdot \mathrm{i}=5, \overrightarrow{\mathrm{OQ}} \cdot \hat{\mathrm{i}}=-5 \), then the magnitude of \( \overrightarrow{\mathrm{OP}}+\overrightarrow{\mathrm{OQ}} \) is
(1) 10
(2) 12
(3) 14
(4) 8
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