已知直线L1:x-2y-1=0,直线L2:ax-by+1=0,a,b∈{123456}.求直线L1∩L2=0的概率
已知直线l1:aX-2Y+4=0,l2:(a-1)X+Y+2=0,若直线l1,l2互相垂直,求l1l2的方程
两直线l1:ax-by+b=0和l2(a-1)x+y+b=0,若l1‖l2且l1与l2的距离为根号2/2,求a,b的值
已知两直线L1:ax-by+4=0,L2:(a-1)x+y+b=0.直线L1与L2平行,并且坐标原点到L1,L2的距离相
L1:ax-by+4=0 L2:(a-1)x+y+b=0 L1、L2平行,坐标原点到两直线距离相等.求a,b
已知a,b∈R,直线l1:x+a^2y+1=0与直线l2:(a^2+1)x-by+3=0,若l1//l2,求b的取值范围
已知两条直线L1:ax-by+4=0和L2:(a-1)x+y+b=0,L1垂直L2…
已知两条直线l1:ax-by+4=0 l2:(a-1)x+y+b=0.l1与l2平行,并且坐标原
直线L1:ax-by+4=0和直线L2:(a-1)x+y+b=0平行且原点两直线的距离相等,求a、b.
已知直线l1:ax+2y+6=0和直线l2:(a-1)y+a^2-1=0,l1垂直l2时,求a的值
已知两直线L1:ax-by+4=0和L2:(a-1)x+y+b=0.若L1 // L2且坐标原点到两直线的距离相等,求a
已知俩直线L1:Ax-By+4=0和L2:(A-1)x+y+B=0.若L1//L2.且坐标原点到俩直线的距离相等..求A
直线L1:ax-2y+4=0,直线L2:(a-1)x+y-2=0,已知L1垂直L2,求过L1与L2的交点且倾斜角喂135