问题标题:
数学代数题:(x/y+z)+(y/x+z)+(z/x+y)=1求(x²/y+z)+(y²/x+z)+(z²/x+y)=?
问题描述:
数学代数题:(x/y+z)+(y/x+z)+(z/x+y)=1求(x²/y+z)+(y²/x+z)+(z²/x+y)=?
苏红旗回答:
x/(y+z)=1-[y/(z+x)+z/(x+y)]y/(z+x)=1-[x/(y+z)+z/(x+y)]z/(x+y)=1-[x/(y+z)+y/(z+x)]x2/(y+z)+y2/(z+x)+z2/(x+y)=x*[x/(y+z)]+y*[y/(z+x)]+z*[z/(x+y)]=x*{1-[y/(z+x)+z/(x+y)]}+y*{1-[x/(y+z)+z/(x+y)]}+z*{1-[x/...
点击显示
数学推荐
热门数学推荐