若0<=a<=π时,使y=2sin(2x+a+π/3)为偶函数,则a
问题描述:
若0<=a<=π时,使y=2sin(2x+a+π/3)为偶函数,则a
答
y=2sin2(x+a/2+π/6)
函数为偶函数则图像关于y轴对称
即将y=2sin2x向左平移π/4个单位就行y1=2sin2(x+π/4)
a+π/3=π/2得a=π/6