已知直线l1:ax+by+4=0,l2:(a-1)x+y+b=0,若l1⊥l2,l1过点(-1,1),求a,b的值
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
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
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
已知两条直线L1:aX-bY+4=0,L2:(a-1)x+y+b=0.求分别满足下列条件的a和b的值.(1)求直线L1过
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
已知直线L1:ax+3y+1=0和L2:x+(a-2)y+a=0,若L1⊥L2,则a的值为( )
点到直线的距离已知直线L1过点A(5,0),L2过点B(0,1),L1‖L2且L1与L2之间的距离等于5,求L1和L2的
已知两条直线L1:ax-by+4=0和L2:(a-1)x+y+b=0,L1垂直L2…
已知直线l1:y=-1/a乘x+2.l2:y=-ax+1+a(a不等于0) 若l1垂直于l2,求a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
已知直线x+a^2y+1=0与直线(a^2+1)x-by+3=0 (1)L1‖l2,求B的取值 2)若L1‖L2,求绝对