
Recuperação Função exponencial e PA
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Easy
DANIELI FELICHAK
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Analisando o gráfico da função f(x) = loga (x - 2), a única alternativa correta que expressa o valor de a é:
A base deve ser diferente de 1
O gráfico é decrescente logo "a" deve estar entre 0 e 1
A base deve ser maior que zero
O gráfico é crescente logo "a" deve ser maior que 1
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual dos gráficos abaixo representa uma função exponencial?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a representação gráfica da função y = log (2x - 10)
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
A quantidade de bactérias de uma cultura, depois de t horas, é dada pela expressão Q(t)=Q0 ⋅2t, e, em que Q0 é a quantidade inicial de bactérias. Nessas condições, se inicialmente havia 1500 bactérias, após quantas horas haverá 12.000 bactérias?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Usando a propriedade do quociente, calcule o valor de log 2,5.
Sendo log 2 = 0,30 e log 5 = 0,70.
0,4
0,3
0,48
0,35
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Usando a propriedade do logaritmo da potência, calcule:
log 64 - log 27.
Sendo log 2 = 0,30 e log 3 = 0,48
0,47
0,36
1,98
2,82
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considere uma progressão aritmética, em que o primeiro termo é 16, o último termo é 40 e a razão é 4. Desse modo, pode-se afirmar que o número de termos desta progressão é
7
6
8
21
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