15分钟彻底搞懂函数的对称性与周期性
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| MP4 | N/A | mp4a.40.2 | Download |
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f(x+2)=-f(x)，f(x+2)=f(-x)，f(x+2)=-f(-x)。这到底是在说函数的周期？轴对称？还是中心对称？用15分钟彻底搞懂函数的周期与对称。
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