
2 SERIE
Authored by GIBRAN MARX
Mathematics
11th Grade
Used 3+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Resolva a equação tg2 x + 1 = 0, com x [0,]
S= { }
S= {π/4,3π/4,5π/4,7π/4}
S= {π/4,3π/4}
S= {5π/4,7π/4}
S= {π/4,5π/4}
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual a solução da equação sen 2x = , em IR.
S = { }
S= {x ∈ IR | x= 5π/4+2πk ou 7π/4+2πk ,com k ∈Z}
S= {x ∈ IR | x= 5π/8+2πk ou 7π/8+2πk ,com k ∈Z}
S= {x ∈ IR | x= π/4+2πk ou 3π/4+2πk ,com k ∈Z}
S= {x ∈ IR | x= 3π/8+2πk ou 5π/8+2πk ,com k ∈Z}
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual a solução da equação cos 2x = no intervalo [0, 2π]?
S= {π/3}
S= {π/3,5π/3}
S= {π/6, π/3}
S= {π/6, 5π/6, 7π/6, 11π/6}
S= {5π/3}
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A expressão é equivalente a:
-tgx
tgx
-cotgx
cotgx
secx.tgx
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Em um cilindro reto, a secção meridiana determina:
uma circunferência.
um retângulo.
um trapézio.
um triângulo.
um hexágono.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dois copos cilíndricos têm o mesmo volume. Seus diâmetros internos medem 6cm e 8cm, respectivamente. Se a soma das suas alturas é igual a 24cm, a diferença entre elas é de:
5,34 cm
8,12 cm
5,78 cm
7,66 cm
6,72 cm
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sobre cilindros, é verdade que:
A base de um cilindro é um retângulo.
Um cilindro, assim como um prisma possui uma única base.
Em um cilindro, a altura é a distância entre os centros das circunferências das bases.
Em um cilindro reto, Altura = 2 raio.
Em um cilindro equilátero Altura = 2 raio.
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