10.º ANO - 2018/2019

qa 1
]-inf,-5[U[1,+inf[ e [-2,-1/5]
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qa 2
2x6^(2/3)
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1.º TESTE
Grupo I: DBCBB e AADDC
Grupo II: 1. ]4/3,5]	2. 10rzcub(4)	3. 5rzquad(7)-10	4. 16rzquad(5)
5. rzquad(34); (x+3)^2+(y+1)^2=5; rzquad(34); 25/6
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qa 4
rq(221)
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2.º TESTE
Grupo I: CACDC e DDDBA
Grupo II: 2. são col.; não existe p; (3rzquad(5),-rzquad(5))	3. -12/5; -3/2; 5rzquad(6)-5
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qa 5
4y+10z+21=0
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qa 6
+ ou -rq(29)
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qa 7
[-7,-2] e [7,11]
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3.º TESTE
1. A	2. C	3. 2x+3y-z-15=0; sim; (x,y,z)=(10,9,4)+k(4,16,0); 179,6		4. (-4,-3); -1,36 e 7,36
5. A	6. z=6; x=0 e y=0; não		7. B	8. A	9. nem par nem ímpar; -3 e 0
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qa 9
x=2 e ]-inf,2]
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qa 10
]-inf,0]U[3/7,+inf[
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qa 11
]-inf,1/2]U[1,+inf[
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4.º TESTE
1. B; 7/3		2. 15; 3,75; [0,10[U]20,30]	3. 2,5		4. B; 11
5. A; y=2/3 x+4/3	6. II		8. C; B; {0,2,4}; ]-inf,-3/2]U[5/2,+inf[
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qa 12
3x+1 e x^2+1
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qa 13
-x^2+2/3 x-2/9 e -16/9
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Mini-teste
1. 112; 10h20'30''; 25,7 e 170,7	2. 2x+7/2 e 21/2 x-30; 8x^2+18x+36 e 6
3. x^3-x^2+x+2; -129/2		4. -2(x-1)^2(x^2+4)
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qa 14
[0,2]U[3,+inf[
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5.º TESTE
1. A	2. C	3. D	4. 24; 0, 1 e 5		5. 3,29		6. C	7. B
8. ]-inf;-1,5]U[1,6;+inf[; [-5,-2]U[3,+inf[	9. -4; 1	10. ]-2,2[\{1}		11. -10/3 (x-8)^5(x-4)
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