l1:mx+8y+n=0 l2:2x+my-1=0 ,l1垂直l2,l1纵截距为1,求m,n
问题描述:
l1:mx+8y+n=0 l2:2x+my-1=0 ,l1垂直l2,l1纵截距为1,求m,n
L1:mx+8y+n=0 L2:2x+my-1=0 ,L1垂直L2,L1纵截距为1,求m,n
答
垂直,则斜率互为负倒数,L1截距为1,说明n=-8