2x2-2x+3m-1=0有两个实数根x1x2且x1x2>x1+ x2求m

问题描述:

2x2-2x+3m-1=0有两个实数根x1x2且x1x2>x1+ x2求m

x1x2=(3m-1)/2,x1+x2=1
(3m-1)/2>1
3m>3
m>1