发布网友 发布时间:2024-10-24 16:47
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热心网友 时间:2024-11-06 16:44
(1)sin3π/4=sinπ/4cosπ/4cosq-sin3π/4sinq=cosπ/4cosq-sinπ/4sinq=cos(π/4+q)=0|q|<π/2故q=π/4(2)相邻对称轴之间的距离为半个周期故T=2π/w=(π/3)x2故w=3f(x)=sin(3x+π/4)