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Matemática

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2. (Uneb-BA) O número real x, tal que <br />

<br />

<br />

<br />

é<br />

) <br />

<br />

) <br />

) <br />

<br />

) <br />

) <br />

3. (FUVESP-SP) A figura abaixo mostra o gráfico da função logaritmo na base b. O valor de b é:<br />

a) ¼<br />

b) 2<br />

c) 3<br />

d) 4<br />

e) 10<br />

4. (UNEB) Sendo f(x) = 3 –x , pode-se afirmar que f(–1 + log 3 2) pertence ao conjunto:<br />

a)<br />

b)<br />

c)<br />

d)<br />

e)<br />

1 2 <br />

, <br />

9 3 <br />

1 3 <br />

, <br />

3 2 <br />

3 3 <br />

, <br />

8 4 <br />

4 <br />

1<br />

, <br />

3 <br />

9 <br />

3<br />

, <br />

2 <br />

118

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