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y=sin(x-π/4)+cos(x-π/4)为周期为多少得什么函数?急
人气:417 ℃ 时间:2019-11-02 08:42:49
解答
y=sin(x-π/4)+cos(x-π/4)
=√2sin(x-π/4+π/4)
=√2sinx
T=2π
是奇函数!
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