填空题!函数y=2sin(2x+派/6)x属于[-派,0]的单调减区间问减区间
问题描述:
填空题!函数y=2sin(2x+派/6)x属于[-派,0]的单调减区间
问减区间
答
∵y=2sin(2x+π/6)
∴y'=4cos(2x+π/6)
∵x∈[-π,0],即-π≤x≤0
∴-11π/6≤2x+π/6≤π/6
∵当-π