椭圆x²/a²+y²/b²=1的离心率c/a=√3/2,∴(c/a)^=3/4,a^=4b^, 又面积最大值是S=1/2ABb=2,即有ab=2∴b=1,a=2,椭圆的方程是x^/4+y^=1①2设PQ:x=ny+m,②代入①,(n^+4)...
access-list 101 extended permit icmp any host 19216810100应当是access-list 101 extended permit icmp any host 109111放内网直实的IP...