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化简并求T(和向量有关)
y=sinx+cos(x+六分之派),化简并求T
人气:366 ℃ 时间:2020-06-29 20:56:50
解答
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...
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