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sup(6) =26~
inf(6) = 2-CA D2HD6K 24D F 58y@DK v DG%D56G E D 7
z8;2JK48;:(8Vv 8;:56Fav D:m 0(: K4Dkv D8w :KvFwYy@8;:v D: 8;F
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x = 1 ~ 8;F 38};2JKBwYv 8
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y(x) = 2x + 1 = 0 = x = 12.
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7J8ly@8=8Vv 0 58vFw x: 248Vy@0KvFwYy(5
(x + 1)2
22
+(y 1)2
2= 1.
&
2'
u
5rv 0(243 5 3x2 + y2 6x = 0 248z(248"7J8;: K 50(: 5\w
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(x + 1)2 y2
3= 1.
