y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性

问题描述:

y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性
1个回答 分类:数学 2014-11-05

问题解答:

我来补答
y=cos(x-π/3)
=cosx*cosπ/3+sinxsinπ/3
y=cos(-x-π/3)
=cos-x*cosπ/3+sin-xsinπ/3
=cosx*cosπ/3-sinxsinπ/3
非奇非偶
 
 
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