题文
如图是半径为2,圆心角为90°的直角扇形OAB,Q为
上一点,点P在扇形内(含边界),且

,则

的最大值为( )

题型:未知 难度:其他题型
答案
4解析
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考点
据考高分专家说,试题“如图是半径为2,圆心角为90°的直.....”主要考查你对 [向量数量积的运算 ]考点的理解。
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