已知函数y=2sin(x-3分之π)

问题描述:

已知函数y=2sin(x-3分之π)
1、求它的定义域和最小正周期.
2.用“五点法”画出此函数在一个周期内的图像(要列表)

1、定义域是Rx系数是1所以T=2π/1=2π2、五点法即sin里取0,π/2,π,3π/2,π则x-π/3=0,x=π/3,sin(x-π/3)=0x-π/3=π/2,x=5π/6,sin(x-π/3)=1x-π/3=π,x=4π/3,sin(x-π/3)=0x-π/3=3π/2,x=11π/6,sin(x-π/3)=...