Question

log 2/2^-2 qual é o valor? obs: usando as propriedades apresentadas
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Answer 1

$log\,\frac{2}{2^{-2}}~=~log\,2~-~log\,2^{-2}\\\\\\log\,\frac{2}{2^{-2}}~=~log\,2~-~(-2.log\,2)\\\\\\log\,\frac{2}{2^{-2}}~=~log\,2~+~2log\,2\\\\\\\boxed{log\,\frac{2}{2^{-2}}~=~3log\,2}$