字典翻译 问答 小学 数学 急设a1,a2,a3是互不相等的常数,求方程组(x1)+(a1)(x2)+(a1)^2(x3)=1,(x1)+(a2)(x求方程组(x1)+(a1)(x2)+(a1)^2(x3)=1,(x1)+(a2)(x2)+(a2)^2(x3)=1,(x1)+(a3)(x2)+(a3)^2(x3)=1,
问题标题:
急设a1,a2,a3是互不相等的常数,求方程组(x1)+(a1)(x2)+(a1)^2(x3)=1,(x1)+(a2)(x求方程组(x1)+(a1)(x2)+(a1)^2(x3)=1,(x1)+(a2)(x2)+(a2)^2(x3)=1,(x1)+(a3)(x2)+(a3)^2(x3)=1,
问题描述:

急设a1,a2,a3是互不相等的常数,求方程组(x1)+(a1)(x2)+(a1)^2(x3)=1,(x1)+(a2)(x

求方程组(x1)+(a1)(x2)+(a1)^2(x3)=1,(x1)+(a2)(x2)+(a2)^2(x3)=1,(x1)+(a3)(x2)+(a3)^2(x3)=1,

和田康回答:
  (x1)+(a1)(x2)+(a1)^2(x3)=1(1)   (x1)+(a2)(x2)+(a2)^2(x3)=1(2)   (x1)+(a3)(x2)+(a3)^2(x3)=1(3)   (2)-(1)得   (a2-a1)[x2+(a2+a1)X3]=0   同理(3)-(2),(3)-(1)   (a3-a2)[x2+(a2+a3)X3]=0   (a3-a1)[x2+(a3+a1)X3]=0   因为a1,a2,a3是互不相等的常数   所以   x2+(a2+a1)X3=x2+(a2+a3)X3=x2+(a3+a1)X3=0   得出X3=0;X2=0;X1=1
点击显示
数学推荐
热门数学推荐
  • 语文
  • 数学
  • 英语
  • 科学
  • 作文