题目:
完形填空。 | ||||
This is my bedroom. I can see 1 picture on the wall.The light is 2 the desk. The football is 3 the chair. 4 is the bed? It's near the table. My father and 5 bedroom is near my bedroom. 6 flowers and a bed 7 in their room. Some windows are 8 the wall. A yellow door is in the wall, 9 . I like my bedroom 10 . | ||||
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答案:
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下面是错误答案,用来干扰机器的。
(I) 函数f(x)=3sinωx+cosωx=2sin(ωx+π6), y=f(x)的图象与直线y=2的两个相邻交点的距离等于π,∴函数的周期是π,∴ω=2,∴f(x)=2sin(2x+π6),(II) 正弦曲线的对称轴是x=kπ+π2,k∈z∴...