1) f(x)=1/2cos2x+1/2+(根号3)/2sin2x+(根号3)/2=sin(2x+π/6)+(1+根号3)/2
T=2π/2=π
2) 2x+π/6∈(2kπ-π/2,2kπ+π/2),即x∈(kπ-π/3,kπ+π/6),k∈Z时 f(x)单调递增
3) x=kπ/2+π/6
(kπ/2-π/12 ,(1+根号3)/2 ) k∈Z
1) f(x)=1/2cos2x+1/2+(根号3)/2sin2x+(根号3)/2=sin(2x+π/6)+(1+根号3)/2
T=2π/2=π
2) 2x+π/6∈(2kπ-π/2,2kπ+π/2),即x∈(kπ-π/3,kπ+π/6),k∈Z时 f(x)单调递增
3) x=kπ/2+π/6
(kπ/2-π/12 ,(1+根号3)/2 ) k∈Z