已知f(x+1)是偶函數(shù),求y=f(2x)的圖象的對(duì)稱軸請(qǐng)簡(jiǎn)要寫明過程謝謝!
f(x+1)是偶函數(shù)f(-x+1)=f(x+1)用2x代x,得f(-2x+1)=f(2x+1)即f(2(0.5-x))=f(2(0.5+x))所以y=f(2x)的圖象的對(duì)稱軸為x=0.5