数学题???
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(1)
f(x)
= sin(2x-π/3) +√3.cos2x
=(1/2)sin2x-(√3/2)cos2x +√3.cos2x
=(1/2)sin2x+(√3/2)cos2x
=sin(2x+π/3)
最小正周期 =π
(2)
单调递增
2kπ - π/2≤2x+π/3 ≤ 2kπ + π/2
kπ - 5π/12≤x ≤ kπ + π/12
(3)
最大
2x+π/3 = 2kπ +π/2
x = kπ +π/12
f(x)
= sin(2x-π/3) +√3.cos2x
=(1/2)sin2x-(√3/2)cos2x +√3.cos2x
=(1/2)sin2x+(√3/2)cos2x
=sin(2x+π/3)
最小正周期 =π
(2)
单调递增
2kπ - π/2≤2x+π/3 ≤ 2kπ + π/2
kπ - 5π/12≤x ≤ kπ + π/12
(3)
最大
2x+π/3 = 2kπ +π/2
x = kπ +π/12
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