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【摘要】本文對(duì)正弦、余弦及正切函數(shù)圖像的軸對(duì)稱(chēng)和中心對(duì)稱(chēng)的特點(diǎn)進(jìn)行了分析,歸納總結(jié)出這三類(lèi)函數(shù)在軸對(duì)稱(chēng)和中心對(duì)稱(chēng)條件下自變量的取值范圍及中心對(duì)稱(chēng)點(diǎn)和對(duì)稱(chēng)軸方程.
【關(guān)鍵詞】正弦、余弦及正切函數(shù)圖像;對(duì)稱(chēng)軸方程;中心對(duì)稱(chēng)點(diǎn)坐標(biāo)