Question

O valor da expressão log3 1/3 + log5 raiz de 5 + log5 25 é: ??

Answer 1

log₃ 1/3 + log₅√5 + log₅ 25 
 log₃ 1/3 +log₅5¹/² +2log₅ 5              log₃ 1=x ⇒3ˣ=1 ⇒ 3ˣ=3⁰
log₃ 1/3 + 1/2log₅ 5 + 2log₅ 5
log₃ 1/3+ 1/2.1 + 2.1
log₃ 1-log₃ 3 +1/2 +2
      0  - 1   + 1/2 +2
       -1 +1/2 +2
        1 +1/2= 3/2