Question

直线方程怎么解?M为何值,(2m²+m-3)x+(m²-m)y=4m-1(1)在x轴上的截距为1(2

Answer 1

y=0代入方程 (2m²+m-3)x=4m-1

x=1,x=-1,分别代入得

m1=-1/2 m2=2

m3=(-5+sqrt(57))/4 m4=(-5-sqrt(57))/4

-(2m^2+m-3)/(m^2-m)=1

得m1=1,m2=-1;当m=1时,代入原式,不成立,所以m=-1

m1=-2/3 m2=1 m=1舍去