y=sin(-1/2x+π/3)的单调递增区间
问题描述:
y=sin(-1/2x+π/3)的单调递增区间
(1)x属于0~π的
(2)x属于-2π~2π的
答
y=sin(-1/2x+π/3)的单调递增区间得到单调增为2kπ-3π/2≤-1/2x+π/3≤2kπ+π/2,k∈Z得出x的值,当x∈(0,π],时,2kπ-3π/2>0,2kπ+π/2≤π,设f(x)=-1/2x+π/3,为单调函数,且最大值为f(π),可得出k值,从而得出x,...