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(31A) Logarithms in base a

Evaluate.

$4^2$

Evaluate.

$\log _{4}1=$

Evaluate. Give your answers as fractions.

$2^{-3}$

Evaluate.

$\log _{9}\frac{1}{81}=$

Evaluate. Give your answers as fractions.

$64^{-\frac{1}{2}}$

Evaluate. Give your answers as fractions.

$\log_{4}2$