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3.	T"	fi {(1.7). (1,8). (1.9)}, .	Y /' 0,
	8^1	{(2, 1), (3, 1), (5, l)>, T	' {(7, 2), (8, 2),	(9.3)},
	S ^1	• T' (T> 8)' {(7,1), (8,	I), (9, 1)} (S>	7) ^1 = 0,
	/.,	/ {(2. I)>, 7’° /’ = {(5, 7), (5, 8)}, P ° S		- {(1,2)},
	S"	T {(7. 2), (7, 3), (7, 5), (8, 2), (8, 3), (8, 5)}.
4.	s^1	{(.v,.v): ,v =
	7'	{(x,y):y <, log^*},
	/’	' = {(,v,.)0: V^2 < -a--2},
	(/	^1 = {(.v,.v):0< y < 2'},
	ir	' = {(x,y):\2x+5y\ = 10},
	fi	' = {(.v,j):a^2 + (v + 3)^2 < 1}.
7.	a)	SM,) = {b,c}, S(A2)	=	S '(fi,) =	{2,4},
				s-\b2) =	{2},
	b)	SM i) = {b,c}, S(A2)	= {6,c},	s~^,(fi,) =	{3,4},
				S'(fi,) =	{1,2},
	c)	SM,) = {c}, SM:)	= {a, fi},	s-'(fi.) =	{1,4},
				fi^'(fi2) =	{2,4}.
H.	a)	SM,) = H, 1), S(J2)	= R\{0},	SM:) = (-	-1, 1),

S- '(fi,) = (-«, -2) u (2, +00), ST\B₂) = (-00, --) u (p +00),

fi^fis) = R,

b)    S(A,) = (-1, 1), S(A₂) = (-oo, 0) u (8, +co), S(Aj) = (-1, ~),

O

S'(£,) = (-«>, -V2)u<V2,+«>), fi'(fi₂) = (-oo,    5)u<l,+t»),

fi^fij) = (O, +00),

S(A₂) = R,    S(A₃) = R,

S-'(B₂) = R+,    fi-'(5₃) =

d) SM,) = <l,+oo),    S(A₂) = (1, +00), SM:) = <l,+oo),

c)    SM.) = R ,

^ '(fi.) = R₊,

6"'(fi:) = R,

fi '(fi:) = R-

e) SM,) = <-2, -V3 ) u ( V3,2),    SM:) = (-2, 2), S(A₃) = S(A,),

O SM i) = (-6, -4) u (4. 6). SM:) = R, SM:) = (-6, - ’ ) u (4, -^),

g) .SVJ|) S\Jh) s 'uh)

<0.+oo),    ,SX/f₃)    (0.+00), ma A (0. log 2),

( I. 10 ^;)u( K»’. ■••»), .V'(/^) ( I, l<>')u(l<), i'< ),

= (-l,+oo).
<-£ ■ '>•	.V '(«) - U (— + Atc, */t i A;t). *e R 4 4
(-oo,-I>U<l, +oo).	S~'(B) ~ U (-— + kn, - • An), i«c 4 4
(-co,-l)U(l,+-oo),	S'(/?) ^= U (0 + kn, — + A71), *eC 6
(0, 2),	r— /-
= (-&5,-V3)u<-	-l,-^)u()|i,l)u<V3,-VW ).
^(ł^J>’ = <0, l)u<4,5), = (3,i>u<2,4),	S '(5) = U (-— + A7T, —+A7l), keC 6 6
K 3	S^r'(B) -
4 6	.V'(« = (-73, 1),
TT 3 (—> 7«). 6 4	JT ^'(5) = (-U
(0. f).	Co s II T i 1 ^w c tr U
/ 4 s 11 „ , <71, -7C)U( — 7t,27t), 3 o
(0, j)u(^7t, 7t), 6 3

9. a) S(A) =

b)    S(A)

c)    S(A) =

d)    S(A) = ^'(£)

e)    S(/l) =

f)    .V '(B)

g)    S '(£) ^:

h)    S(4) =

i)    S04) =

j)    S(A) =

k)    S(A) =

l)    S(A) =

m)    .r'(S)

n)    S(A) =

o)    =