y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性
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y=cos(x-π/3)y=cos(x-π/3)求这两个三角函数的奇偶性y=cos(x-π/3)y=cos(x-π/3)求这两个三角函数的奇偶性y=cos(x-π/3)y=cos(x-π/3)求这两个
y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性
y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性
y=cos(x-π/3) y=cos(x-π/3) 求这两个三角函数的奇偶性
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
cos(x)看到这个 cos(x)-cos(y)=?
:y' +y= cos x y=
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