高一数学必须修读四习题1-4.ppt
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高一数学必修四 习题1.4
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A组
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11.容易知道,正弦函数y=sinx是奇函数,正弦曲线关于原点对称,即原点是正弦曲线的对称中心.除原点外,正弦曲线还有其他对称中心吗?如果有,对称中心的坐标是什么?另外,正弦曲线是轴对称图形吗?如果是,对称轴方程是什么?
你能用已经学过的正弦函数性质解释上述现象吗?
对余弦函数和正切函数,讨论上述同样的问题.
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1
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y
x
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1
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