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1 Lista de Exerccios
Fonte: http://www.professorwaltertadeu.mat.br/
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: < 0 ; < 0 3
: < 0 ; > 0 2 Resposta: opo (c)
+ 3 < 0 < 3
1 < 0 < 1 Resposta: opo (e)
, 0
= 4 + 0 3
= 0
+ 0 + 3
8 + 16 + 9 = + 9
8 + 16 + 9 = + 9
8 = 16 = 2 2 , 0 Resposta: opo (a)
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= +
= 1 3 = 1 + 3 = 4
= 8 5 = 3
= 4 + 3 = 16 + 9 = 25 = 5 Resposta: opo (e)
= 5 1
2 3 14 1 1
= 0
3 2 + 2 0 1 2 + 1 0 = 0
2 + 1 6 = 0
2 = 16 = 8 Resposta: opo (d)
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3 , 7
5 , 1
0 , 0
,
= = 0 + 0
= +
mdio de =3 + 5
2=
8
2= 4
=7 + 1
2=
6
2= 3
= 4 + 3= 16 + 9 = 25
= 5
Resposta: opo (c)
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=0 1 1
3 1
3 3 1
= 0
3 9 + 3 + 3 = 0
3 3 = 0
3 = 3 = 1 Resposta: = 1
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a)
1 5 1
3 0 1
4 1=
15
2+ 2 0 +
5
2 1 5 =
10
2+ 5 = 5 + 5 = 0
Resposta: C colinear com A e B
b)1 5 1
3 0 1
5 1
= 0
15 + 5 5 1 5 = 0
5 + 10 15 = 0 ( 5
+ 2 3 = 0
Soma = 2
Produto = 3
= 3 ou = 1
Resposta: = 3 ou = 1
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2 + 1 2 1
6 5 1
0 1 1
= 0
5. 2 + 1 6 + 12 1. 2 + 1 = 0
6. 2 + 1 + 6 = 0
12 6 + 6 = 0
12 = 0 = 0 Resposta: opo (e)
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0
1 , 2
1 , 2
1 , 2
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0
1 , 2
1 , 2
1 , 2
Nessa questo, para compensar o
tempo gasto para fazer a figura,
vamos usar a frmula
para calcular a rea do tringulo,
lembrando que, no tringulo
retngulo, um cateto a base,
enquanto o outro a altura.
=2 4
2=
8
2= 4
Resposta: opo (e)
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3 1 14 2 1
7 1
= 0
6 + 2 8 + + 2 2 1 4 = 0
3 3 = 0
3 = 3 = 1 Resposta: opo (a)
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= 2 1 12 5 1
4 1
= 10 + 8 + 5 8 2
= 8 4
=
2 e = 20
2= 20
8 4 2
= 20
8 4 = 40 8 4 = 40
Se 8 4 = 40 4 = 48 = 12
Se 8 4 = 40 4 = 32 = 8 Resposta: opo (a)
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Professora Telma Castro Silva
