化简并求T(和向量有关)y=sinx+cos(x+六分之派),化简并求T

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/26 16:15:45
化简并求T(和向量有关)y=sinx+cos(x+六分之派),化简并求T化简并求T(和向量有关)y=sinx+cos(x+六分之派),化简并求T化简并求T(和向量有关)y=sinx+cos(x+六分之

化简并求T(和向量有关)y=sinx+cos(x+六分之派),化简并求T
化简并求T(和向量有关)
y=sinx+cos(x+六分之派),化简并求T

化简并求T(和向量有关)y=sinx+cos(x+六分之派),化简并求T
y=sinx+cos(x+π/6)
=sin[(x+π/6)-π/6]+cos(x+π/6)
=sin(x+π/6)cosπ/6-cos(x+π/6)sinπ/6+cos(x+π/6)
=√3/2sin(x+π/6)-1/2cos(x+π/6)+cos(x+π/6)
=√3/2sin(x+π/6)+1/2cos(x+π/6)
=sin(x+π/6+π/6)
=sin(x+π/3)
∴周期T=π/3.