Question

Qual é o logaritmo de LOG 0,25 (na base2)?Qual o LOG de 0,25 (na base 2)?

Answer 1

$log_{_2}0,25~=~x\\\\\\0,25~=~2^x\\\\\\\frac{1}{4}~=~2^x\\\\\\\frac{1}{2^2}~=~2^x\\\\\\2^{-2}~=~2^x\\\\\\\boxed{x~=~-2}$