Question

Resolva a equação logaritima : Log1/3 (x-1) = -2

Answer 1

Resolva a equação logaritima : Log1/3 (x-1) = -2

Log1/3 (x-1) = -2  ==> x - 1 = (1/3)^-2

x - 1 = (3^-1)^-2 ==> x - 1 = 3^2  ==. x - 1 = 9 

x = 9 + 1 ==> x = 10