10.º ANO - 2021/2022

qa 1
F, V
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qa 2
]-inf,-4[U[5,+inf[
[3,5[
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qa 3
10-2rq(3)
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1.º TESTE
1. C	2. A; ]3,+inf[		3. {-6}		4. 14rq(5); -10rc(2)	5. 8rq(6)-4pi	6. 3rc(4)
7. 2(rq(2)+rq(7))	8. D	9. A	10. Urbalino	11. C; rq(61); (0,-5-4rq(3))
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qa 4
y=2x/7+13/14
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2.º TESTE
1. B; F; C; rq(13)	3. D; y=5x/2+5/4; C; (x-2)^2+(y+1)^2<=5^((y>=x/2-1)^(x<=3)v(y<=0^x>=3))
4. não; 2/5; 1/3	5. 2rq(10)
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qa 6
0 e 19/6
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qa 7
-9; y=5x/2-11/2
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qa 8
(x+2)^2+(y-5/2)^2+(z-1)^2=161/4
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3.º TESTE
1. A	2. -24; C; (8,-8)	3.(x,y)=(-4,-1)+k(3,2); -3/4; (1,2/3)
4. B; 4rq(3); (x-4)^2+(y-1)^2+(z-4)^2=32; -1,325	5. B; z=-2+rq(3) e z=-2-rq(13); y=13/2
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qa 9
2rq(5)
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qa 10
+ ou - rq(22)
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4.º TESTE
1. [-4,6]; {0,3,4}; ]-7,-4]U[-2,5]; ]-7,-1[\{-6}; 2/5 e 3 e não existe; 7/3 e 32/3; C	2. n.inj, n.sobrej e n. bij
3. C	4. [-1/5,+inf[\{5}; D; 5,14 e 6,37	5. (x+2)/5; +-rq(10)	6. D	7. B; não; (x,y,z)=(4,0,0)+k(-1,7,3); 842/59
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qa 12

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Mini teste
1. [-5,1]; 4 e 1	2. 783 e 1,161		3. ]5/2,+inf[; cresc]-inf,2] e decresc[2,+inf[; ]-inf,-1]; x=2		4. 2/3
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qa 13
]-inf,-2]U[14/5,+inf[
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5.º TESTE
1. A	2. (x-10)^2+(y-4)^2+(z-13)^2=52		3. B; 25	4. A	5. A; D; -3; x=-3; n.par e n.ímpar
6. ]-inf,-4[U]3/2,+inf[; ]-inf,-1/2]; [-11/3,1]		7. -15/16; -2x^2-5 e 10-x; 2x^3+2x^2+5x+4 e 9; ]-inf,8,51]	9. -7/3 e -14/3
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qa 14
]-inf,-3]U[2,3]