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三角函数y=(ωx+φ)与x轴交点

2025-04-01 09:19:17

推荐回答（1个）

回答1：

y=sin(ωx+φ) = sin[ω(x+φ/w)]
交点是-φ/w，自己加上周期性，就是全部交点了。
y=sinx →向左平移φ/w个单位→横坐标缩小为1/ω
y=sinx →横坐标缩小为1/ω→向左平移φ/w个单位

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