发布网友 发布时间:2024-10-23 19:16
共1个回答
热心网友 时间:2024-10-23 22:44
T=π=2π/w--> w=2
最高点的纵坐标为3/2--> A=3/2
对称轴方程是x=π/6-->因为sin函数的对称轴在π/2+kπ,上,所以φ=-π/6+kπ+π/2--->φ=π/3
y=1.5sin(2x+π/3)
增区间为:2kπ-π/2=<2x+π/3<=2kπ+π/2--> kπ-5π/12=<x<=kπ+π/12
减区间为:2kπ+π/2<=2x+π/3<=2kπ+3π/2-->kπ+π/12<=kπ+7π/12