已知Fx=2SIN(X\2+π\6)-1,x∈R. 求函数fx的最小正周期和单调增区间
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发布时间:2024-10-22 05:19
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时间:2024-11-09 05:26
答:
f(x)=2sin(x/2+π/6)-1
最小正周期T=2π/w=2π/(1/2)=4π
单调递增区间满足:
2kπ-π/2<=x/2+π/6<=2kπ+π/2
2kπ-2π/3<=x/2<=2kπ+π/3
4kπ-4π/3<=x<=4kπ+2π/3
所以单调递增区间为:
[4kπ-4π/3,4kπ+2π/3],k为任意整数