Question

log 7 dividido por 7 na base 7

Answer 1

log (7/7)
    ⁷
log 7 - log 7
    ⁷         ⁷
1 - 1
0

Answer 2

$log7^\frac{7}{7} = log7~^7 - log 7 ~^7 = 1 - 1 = 0$