qa 2
1. ]-inf,-2[U[3,+inf[			1. ]-inf,-3]U]2,+inf[
2. ]-5/4,3[				2. ]-3,-6/5[
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1º TESTE
Grupo I
ACCDB e BADCC
Grupo II
1. ~avc; a=>c; O Torcato não tem dinheiro para comprar um automóvel, logo ele não pretende comprá-lo; F
4. [-2,-5/8[	5. 3rz(2)/4; 16-8rz(3); 2RzSext(32)
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qa 3
2^(-3/20)
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qa 4
x^2/50+y^2/25=1
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2º TESTE
Grupo I
DBCDB e CCAAD
Grupo II
1. [-4rz(3),2[		2. -2RzCub(7); -2RzVinte(15)	3. 5x3^(3/4)
5. (x-4)^2+(y+2)^2=20; y=4/5 x-11/10; x^2/25+y^2/9=1; (-1+rz(13)/2;-9/2)	6. rz(6)-1
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qa 5
AK ou BL
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qa 7
(x-1)^2+(y-5)^2+(z-1)^2=3
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3.º TESTE
Grupo I
CBBBA e BACDD
Grupo II
1. (x,y)=(1,-6)+k(3,-8); -1/8; y=-8/3 x+25	2. (-5rz(2),-2rz(2))
3. x=-3 ^ y=0; (x+3)^2+(y-2)^2+(z-4)^2=76; 3x-y+1=0; 13/9	4. (0,25/4); 4
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qa 8
+- rz(23)
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qa 9
não inj., sobrej., não bij.
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4.º TESTE
Grupo I
BADAC e ABBBD
Grupo II
1. x=3-8k ^ y=-1+4k ^ z=-5+3k	2. (4,0,4); (10,-15,10)		3. F; 12; -3 e 3; (3x+6)^2-11; (1,402;-9,033)
4. 4 e rz(5)
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5.º TESTE
Grupo I
CABCB e DBAAD
Grupo II
1. ]-5,0]; ]2,3]; ]-inf,-1] e [4,+inf[; -1 e 1; 1 e 2;]-8,1] e [-1,4[
2. ]-inf,3/2[; (x+4)/2; -0,87 e 1,54		3. 233; 14 e 37		4. ]-inf,2a^2]
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qa 11
[0,3/2]
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qa 12
-3/2; -2/3; 0
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MINI-TESTE
1. 132		2. 7,2; 6,5 e 8		3. ]-3,-1[U]1,+inf[; -2x-6 e 8x+24; ]-inf;25,90]
4. B; [0,6/5]; -21/4