x^+(y+4)^2=4
圆心(0,-4),半径2
(1,1)到此圆上点的最大距离=(1,1)到圆心的距离+半径
=(1+5^2)^(1/2)+2
=26^(1/2)+2
(x-1)^2+(y-1)^2的最大值为:[26^(1/2)+2]^2=20+4(根号26)
x^+(y+4)^2=4
圆心(0,-4),半径2
(1,1)到此圆上点的最大距离=(1,1)到圆心的距离+半径
=(1+5^2)^(1/2)+2
=26^(1/2)+2
(x-1)^2+(y-1)^2的最大值为:[26^(1/2)+2]^2=20+4(根号26)