lg(0,1x) * lg(10x)=3 пожалуйста побыстрее решение
(lg x - 1)(lg x + 1)=3
lg^2 x - 1 = 3
lg^2 x = 4
lg x = +-2
x=100 or 0.01
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(lg x - 1)(lg x + 1)=3
lg^2 x - 1 = 3
lg^2 x = 4
lg x = +-2
x=100 or 0.01