a) log9 81 = log(81)/log(9) = log(3^4)/log(3^2) = 4log3 / 2log3 = 4/2 = 2
б) log2 0,125 = log(0,125)/log(2) = log(2^-3)/log2 = -3log2 / log2 = -3
a) log9 81 = log(81)/log(9) = log(3^4)/log(3^2) = 4log3 / 2log3 = 4/2 = 2
б) log2 0,125 = log(0,125)/log(2) = log(2^-3)/log2 = -3log2 / log2 = -3