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设向量,定义一运算:⊗(b1,b2)=(a1b1,a2b2).已知,点Q在y=f...
设向量
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,定义一运算:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124428475976561/SYS201310251244284759765007_ST/1.png)
⊗(b
1,b
2)=(a
1b
1,a
2b
2).已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124428475976561/SYS201310251244284759765007_ST/2.png)
,点Q在y=f(x)的图象上运动,且满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124428475976561/SYS201310251244284759765007_ST/3.png)
(其中O为坐标原点),则y=f(x)的最大值及最小正周期分别是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124428475976561/SYS201310251244284759765007_ST/4.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124428475976561/SYS201310251244284759765007_ST/5.png)
C.2,π
D.2,4π
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124428475976561/SYS201310251244284759765002_ST/0.png)
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