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Avaliação de Matemática - 2º Trimestre

Authored by ANA SANTOS

Mathematics

11th Grade

Avaliação de Matemática - 2º Trimestre
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23 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

Usando a definição de logaritmo: log_a b = x ↔ a^x = b, calcule: a) log_3 81 = b) log 0,1 = c) log_2 64 =

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

Sabe-se que log_a 49 = 2. Calcule a.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Sabe-se que log_3 x = −3. Calcule x.

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Usando a propriedade operatória “logaritmo de um produto”, calcule: log 2 + log 5

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Sabendo que log 2 ≅ 0,30 e log 3 ≅ 0,47, então quanto vale log 12, aproximadamente?

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6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual a função inversa de y = 7/x?

y = log x

y = log x/7

y = log_7 x

y = log (7x)

y = x/7

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aplicando as propriedades de consequência dos logaritmos, é possível dizer que:

log 100 = 3

10^log 5 = 5

log 0,01 = 2

log 10^-2 = 2

log 1 = 10

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