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33
18.1.
; )0,0(,0,0,4,1:
2222
≥≥===+=+ yxyxyxyxD
22
yx
yx
+
+
=
µ
.
18.2.
;
)0,0(,0,0,25,4:
2222
≤≥===+=+ yxyxyxyxD
22
32
yx
yx
+
−
=
µ
.
18.3.
; )0,0(,0,0,9,1:
2222
≤≥===+=+ yxyxyxyxD
22
yx
yx
+
−
=
µ
.
18.4.
;
)0,0(,0,0,25,9:
2222
≥≤===+=+ yxyxyxyxD
22
2
yx
xy
+
−
=
µ
.
18.5.
;
)0,0(,0,0,4,16:
2222
≥≤===+=+ yxyxyxyxD
22
32
yx
xy
+
−
=
µ
.
18.6.
;
)0,0(,0,0,4,1:
2222
≥≥===+=+ yxyxyxyxD
22
2
yx
yx
+
+
=
µ
.
18.7.
;
)0,0(,0,0,4,16:
2222
≤≥===+=+ yxyxyxyxD
22
3
yx
yx
+
−
=
µ
.
18.8.
; )0,0(,0,0,9,4:
2222
≥≤===+=+ yxyxyxyxD
22
4
yx
xy
+
−
=
µ
.
18.9.
;
)0,0(,0,0,16,1:
2222
≥≥===+=+ yxyxyxyxD
22
3
yx
yx
+
+
=
µ
.
33
18.1. D : x 2 + y 2 = 1, x 2 + y 2 = 4, x = 0, y = 0, ( x ≥ 0, y ≥ 0) ;
x+ y
µ= 2 .
x + y2
18.2. D : x 2 + y 2 = 4, x 2 + y 2 = 25, x = 0, y = 0, ( x ≥ 0, y ≤ 0) ;
2x − 3y
µ= 2 .
x + y2
18.3. D : x 2 + y 2 = 1, x 2 + y 2 = 9, x = 0, y = 0, ( x ≥ 0, y ≤ 0) ;
x− y
µ= 2 2
.
x +y
18.4. D : x 2 + y 2 = 9, x 2 + y 2 = 25, x = 0, y = 0, ( x ≤ 0, y ≥ 0) ;
2y − x
µ= 2 .
x + y2
18.5. D : x 2 + y 2 = 16, x 2 + y 2 = 4, x = 0, y = 0, ( x ≤ 0, y ≥ 0) ;
2 y − 3x
µ= 2 .
x + y2
18.6. D : x 2 + y 2 = 1, x 2 + y 2 = 4, x = 0, y = 0, ( x ≥ 0, y ≥ 0) ;
x + 2y
µ= 2 .
x + y2
18.7. D : x 2 + y 2 = 16, x 2 + y 2 = 4, x = 0, y = 0, ( x ≥ 0, y ≤ 0) ;
3x − y
µ= 2 .
x + y2
18.8. D : x 2 + y 2 = 4, x 2 + y 2 = 9, x = 0, y = 0, ( x ≤ 0, y ≥ 0) ;
y − 4x
µ= 2 2
.
x +y
18.9. D : x 2 + y 2 = 1, x 2 + y 2 = 16, x = 0, y = 0, ( x ≥ 0, y ≥ 0) ;
x + 3y
µ= 2 .
x + y2
