sinxcosx=1/2sin2x
cos^2x=(cos2x+1)/2
f=0.5sin2x+genhao3/2cos2x+genhao3/2
=sin(2x+π/3)+genhao3/2
2x+π/3∈【5π/6,11π/6】
画图就知道5π/6对应最大值,9π/6对应最小值
sinxcosx=1/2sin2x
cos^2x=(cos2x+1)/2
f=0.5sin2x+genhao3/2cos2x+genhao3/2
=sin(2x+π/3)+genhao3/2
2x+π/3∈【5π/6,11π/6】
画图就知道5π/6对应最大值,9π/6对应最小值