
Equações Logaritmicas
Authored by ANA FOSS
Mathematics
12th Grade
Used 2+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que caracteriza uma equação logarítmica?
A incógnita está no logaritmando ou na base dos logaritmos.
A incógnita está apenas no expoente.
A incógnita está apenas no denominador.
A incógnita está apenas no numerador.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a condição para a existência do logaritmo logₐ b?
b > 0 e 1 ≠ a > 0
b < 0 e a > 1
b > 0 e a < 0
b = 0 e a > 1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o procedimento correto para verificar se uma raiz encontrada é válida para a equação logarítmica?
Substituir o valor de x apenas na equação original.
Substituir o valor de x em todas as expressões dentro dos logaritmos e verificar se os resultados são positivos.
Substituir o valor de x apenas na expressão (1 - x).
Substituir o valor de x apenas na expressão (4x + 1).
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor de x na equação log(4x + 60) = 2?
x = 10
x = 4
x = 15
x = 20
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor de x na equação log₅(x + 1) + log₅3 = log₅15?
x = 4
x = 10
x = 3
x = 5
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