来自霍玉臻的问题
x-1/x-x2-1/2=1似乎弄错了x/(x-1)-2/(x^2-1)=1
x-1/x-x2-1/2=1
似乎弄错了x/(x-1)-2/(x^2-1)=1
1回答
2019-10-27 08:09
x-1/x-x2-1/2=1似乎弄错了x/(x-1)-2/(x^2-1)=1
x-1/x-x2-1/2=1
似乎弄错了x/(x-1)-2/(x^2-1)=1
x/(x-1)×(x+1)(x-1)-2/(x^2-1)×(x+1)(x-1)=1
x(x+1)-2=(x+1)(x-1)
x=1
检验后,x=1为增根,方程无解