y=sin2xcos2x的最小正周期,递增区间及最大值
问题描述:
y=sin2xcos2x的最小正周期,递增区间及最大值
答
y=sin2xcos2x
=1/2sin4x
T=2π/4=π/2
4x=[-π/2+2kπ,π/2+2kπ]
x=[-π/8+kπ/2,π/8+kπ/2]
y max=1/2