
Equações Exponenciais
Authored by ALISSON LUCAS CASTILHO
Mathematics
12th Grade
Used 1+ times

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30 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 ((3^2)^x - 10 * 3^x = -9)?
((3^x)^2 - 10 * 3^x = -9)
(9^x - 10 * 3^x = -9)
(3^x - 10 * 3^x = -9)
(3^{2x} - 10 * 3^x = -9)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a base comum utilizada para reduzir a equação 9^x - 10 * 3^x = -9?
3
9
2
10
4.
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
5.
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 - 9y + 10 = 0
y^2 - 10y - 9 = 0
y^2 + 10y + 9 = 0
6.
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
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método é sugerido para resolver a equação do 2º grau?
Soma e produto
Fórmula de Bhaskara
Completar o quadrado
Método gráfico
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