题文
已知F1、F2分别为椭圆
的左、右焦点,P为椭圆上一点,Q是y轴上的一个动点,若

=4,则

=( )。 题型:未知 难度:其他题型
答案
20解析
该题暂无解析
考点
据考高分专家说,试题“已知F1、F2分别为椭圆的左.....”主要考查你对 [向量数量积的运算 ]考点的理解。
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