11.º ANO - 2020/2021

qa 1
8,67 e 32,8
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qa 2
-rq(5)/5 e -2rq(5)/5
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qa 3
(rq(2)-rq(3))/2
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1.º TESTE
1. 68,9		2. D; A; 3,84		3. B	4. B; -rq(6)/3
5. C	6. x=5pi/12; 0,94 e 2,20	7. ]1/3,5/3]
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qa 4
16-4rq(2)
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qa 5
y=7x/2-19/2 e (19/7,0)
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2.º TESTE
1. B; 0,4	2. B	3. D; 15pi/4 e 35pi/4	4. ex: (8,4,0) e (8,0,4); D; 35,3; x-2y-2z+38=0; y-z-2=0; 435
5. A	6. y=4x+12 e 1,3; x^2+y^2-4x-6y-4=0	7. 10
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qa 6
x=8
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qa 7
10/7
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qa 8
-5/2
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3.º TESTE
1. B	2. C; (x,y,z)=(0,2,0)+k(0,2,-3)		4. A; 7/2; 1,72		5. ]3;3,9]	6. C
7. (3-x)^3-5; -31/4	8. C	9. 0; 1/12
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qa 9
-4
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qa 10
41
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4.º TESTE
1. C; 43; 1,68		2. 5pi/12 e 7pi/12; (0,57;2,56) e (2,14; 0,90)		3. A	4. C	5. ]-inf,-1[U[1/5,+inf[; B
6. y=-3x+8	7. D	8. IV	9. 2,6; -1,9; 4h7min
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