广东省惠州市2019年高考数学复习专题平面向量的基本定理及坐标表示练习(无答案)文.doc

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1、 1 -平面向量基本定理及其坐标表示一、 知识爬升1:已知 (3,2)(0,1)ab,求 24,3ab的坐标。2、已知点 (1,5)A和向量 (2,3)a,若 ABa,则点 的坐标是 。3、设 ,BCD四点的坐标依次是 (1,0),(43),1,则四边形 ABCD是 。4、已知向量 (2,3)(,)ab,若 /ab,则 。5、若三点 (1,)2,4)(,9)ABCx共线,则 x 。6、在平行四边形 ABCD中, 为一条对角线,若 )3,1(),42(ACB,则 BD 。7、下列各组的向量中, 12(,)(5,7)e, 12(3,5)(6,10)e, 123(,)(,)4e,能作为表示它们所在

2、平面内所有向量的基底的是 。8、已知 (,)(,)ab,当 k为何值时, (1) bak与 平行?(2) k与 3平行?平行时它们是同向还是反向?- 2 -9、已知 ),(1,3),(baCBA, (1)若 CBA,三点共线,求 ba,的关系式;(2) ,求点 的坐标。二、终极题10:(1)已知 ABCD的三个顶点 ,ABC的坐标分别为 (2,1),3(4),求点 D的坐标。(2)已知 (2,4)(3,1,4),且 3,MANCB,求 ,MN人坐标。- 3 -11:(1)已知向量 2(3,4)ax, (1,2)3,AB,若 /aAB,求 x值。(2)已知 1,)b,当实数 k取何值时 b与 24平行。

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