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(31A) Logarithms in base a

Evaluate.

$3^4$

Evaluate.

$\log _{8}1=$

Evaluate. Give your answers as fractions.

$7^{-1}$

Evaluate.

$\log _{4}\frac{1}{256}=$

Evaluate. Give your answers as fractions.

$36^{\frac{1}{2}}$

Evaluate. Give your answers as fractions.

$\log_{512}8$