Question

qual o log da raiz quinta de 81 na base 1/9?

Answer 1

log[base (1/3)²] de raiz5de3^4
log[base(1/3)²] de 3^4/5
1/2log(base1/3) de 3^4/5
1/2×4/5log(base1/3)de3
considerando que 1/3^(x) = 3 ⇒ x = -1
2/5[-1] ⇒ log(base1/9) de raiz5de 81 = -2/5
Resposta: -2/5