f(x)=Asin(wx+&)如果函数是偶函数,求&的取值
问题描述:
f(x)=Asin(wx+&)如果函数是偶函数,求&的取值
答
f(x)=Asin(wx+&)的对称轴为wx+&=kπ+π/2
现在f(x)为偶函数,即x=0是其一条对称轴
带入得&=kπ+π/2