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如图,单摆从某点开始来回摆动,离开平衡位置O的距离s cm和时间t s的函数关系...
如图,单摆从某点开始来回摆动,离开平衡位置O的距离s cm和时间t s的函数关系式为s=6sin(2πt+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405003_ST/0.png)
),那么单摆来回摆动一次所需的时间为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405003_ST/images1.png)
A.2πs
B.πs
C.0.5s
D.1s
考点分析:
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函数
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在区间
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的简图是( )
A.
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B.
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C.
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D.
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将函数y=sin2x的图象向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405001_ST/0.png)
个单位,再向上平移1个单位,所得图象的函数解析式是( )
A.y=2cos
2B.y=2sin
2C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405001_ST/1.png)
D.y=cos2
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已知简谐运动
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405000_ST/0.png)
的图象经过点(0,1),则该简谐运动的最小正周期T 和初相φ分别为( )
A.T=6,φ=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405000_ST/1.png)
B.T=6,φ=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123823834040502/SYS201310251238238340405000_ST/2.png)
C.T=6π,φ=
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D.T=6π,φ=
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1中,底面ABCD为等腰梯形,AB∥CD,AB=4,BC=CD=2,AA
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1分别是棱AD,AA
1的中点.
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1;
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