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(31A) Logarithms in base a

Evaluate.

$10^3$

Evaluate.

$\log _{7}1=$

Evaluate. Give your answers as fractions.

$4^{-2}$

Evaluate.

$\log\frac{1}{10}=$

Evaluate. Give your answers as fractions.

$32^{-\frac{1}{5}}$

Evaluate. Give your answers as fractions.

$\log_{81}9$