log1/3 81=c
log(1/3) 81 = c
(1/3)^c = 81
(1/3)^c = 3^4
(1/3)^c = (1/3)^(-4)
c = -4
log 1/3 81=-4
bo (1/3)^-4=81
81=3^4=1/3^-4
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log(1/3) 81 = c
(1/3)^c = 81
(1/3)^c = 3^4
(1/3)^c = (1/3)^(-4)
c = -4
log 1/3 81=-4
bo (1/3)^-4=81
81=3^4=1/3^-4