2cos^2x+根号3sin2x+m=2sin(2x+π/6)+m+1,怎么做的?
1个回答
cos2x+根号3sin2x+m+1
=2(1/2*cos2x+√3/2*sin2x)+m+1
=2(sinπ/6cos2x+sin2xcosπ/6)+m+1
=2sin(2x+π/6)+m+1
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