10.º ANO - 2019/2020

qa 1
]-inf,-3[U[8,+inf[
[8,+inf[
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qa 2
(x-3)^2+(y-1/2)^2=53/4
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1.º TESTE
1. B	2. ]-oo,-2]U[2,5/2[	3. D	4. 17rq(5)	5. B; 9pi/4 rc(2)
6. (x-1)^2+(y-2)^2=5; C; A; não; 2-rq(15) e 2+rq(15)	7. Liliano
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qa 3
rq(113)/2
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qa 4
y=-4/5 x + 17/5
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2.º TESTE
1. D; J; 3rq(5)		2. C	3. não; D; (-1/2;1/6)	4. A; (0,3) e (-9/2,0); (x,y)=(0,3)+k(3,2); (-4,2-rq(3))
5. 6; y=8x/3+25/3; A; 35/3
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qa 6
y=-rq(7) e y=rq(7)
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qa 7
3-rq(10) e 3+rq(10)
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3.º TESTE
1. A	2. B; (-1,6;4)		3. D; (0,-3,3) e rq(6)		4. x=2 e y=0; x-y-1=0; (x-1)^2+y^2+(z-1)^2=2; C; 4; -1,65 e 1,87
5. pertence; A; (6,5,-4); (x,y,z)=(1,-rq(6)/2,1-rq(6))+k(1,-2,2)	6. (14/5,23/5,3)
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qa 8
-9/2
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4.º TESTE
1. C	2. A; 2rq(13)	3. C	4. B	5. ]-inf,4]; não existem; [4,+inf[; não existe; 4 e 3; A; x=5; ]-5;-4]U[2,5;3,5]
6. ]-4,+inf[ e 3; -5,24 e 3,24		7. -3-rq(6) e -3+rq(6)
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