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(31A) Logarithms in base a

Evaluate.

$4^4$

Evaluate.

$\log _{6}216=$

Evaluate. Give your answers as fractions.

$6^{-2}$

Evaluate.

$\log _{2}\frac{1}{2}=$

Evaluate. Give your answers as fractions.

$49^{-\frac{1}{2}}$

Evaluate. Give your answers as fractions.

$\log_{4}2$