显然,A,B,D的周期都是2π/(1/2)=4π,
要使图像关于直线x=π/3对称,则将x=π/3代入解析式,y能取到最大值或最小值,代入验证即可,但你的解析式A与D相同,请修改题目后,自己做.
下列函数中周期为4π且图像关于直线x=π/3对称的函数( )
下列函数中周期为4π且图像关于直线x=π/3对称的函数( )
A.y=2sin(x/2-π/3)
B.y=2sin(x/2-π/6)
C.y=2sin(2x-π/3) 写步骤 多谢.
D.y=2sin(x/2-π/3)
不好意思。更正一下 ：A.y=2sin(x/2 +π/3)
B.y=2sin(x/2-π/6)
C.y=2sin(2x+π/3)
D.y=2sin(x/2-π/3 ）解得D,y=-1.
A.y=2sin(x/2-π/3)
B.y=2sin(x/2-π/6)
C.y=2sin(2x-π/3) 写步骤 多谢.
D.y=2sin(x/2-π/3)
不好意思。更正一下 ：A.y=2sin(x/2 +π/3)
B.y=2sin(x/2-π/6)
C.y=2sin(2x+π/3)
D.y=2sin(x/2-π/3 ）解得D,y=-1.
数学人气：921 ℃时间：2020-01-31 17:40:18
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