
Equações Exponenciais
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Used 1+ times
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33 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Em alguns casos, não é possível reduzir ambos os membros da equação a uma potência de mesma base. Qual artifício de cálculo é utilizado nessas situações?
Substituir o termo (3^x) por (y)
Multiplicar ambos os lados por 2
Dividir ambos os lados por 3
Adicionar 10 a ambos os lados
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das seguintes equações é equivalente a (9^x - 10 * 3^x = -9)?
((3^2)^x - 10 * 3^x = -9)
(3^x - 10 * 3^x = -9)
(9^x - 10 * 3^x = 9)
((3^x)^2 - 10 * 3^x = 9)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a equivalência correta entre as potências (3^2)^x e (3^x)^2?
( (3^2)^x = (3^x)^2 )
( (3^2)^x = 3^{2x} )
( (3^2)^x = 3^{x+2} )
( (3^2)^x = 3^{x-2} )
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o objetivo de substituir o termo (3^x) por (y) na equação?
Obter uma equação do 2º grau
Simplificar a equação
Eliminar o termo (3^x)
Multiplicar a equação por 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a substituição feita para transformar a equação exponencial em uma equação do 2º grau?
Fazendo 3^x = y
Fazendo y = 3^x
Fazendo x = 3^y
Fazendo y = x^3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a equação do 2º grau resultante após a substituição?
y^2 - 10y + 9 = 0
y^2 + 10y - 9 = 0
y^2 - 9y + 10 = 0
y^2 + 9y - 10 = 0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quais são as raízes da equação y^2 - 10y + 9 = 0?
y_1 = 9 e y_2 = 1
y_1 = 1 e y_2 = 9
y_1 = 10 e y_2 = -1
y_1 = -9 e y_2 = -1
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