Question

log 9 raiz quinta de 81

Answer 1

O log do 9 raiz quinta do 81
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
r:: -2/5hh