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Determinati x daca -lgx=7,3

Răspuns :

[tex]-lgx = lg x^{-1} [/tex]

[tex]lg x^{-1} = 7,3*lg10 =\ \textgreater \ x^{-1} = 10^{7,3} =\ \textgreater \ x= 10^{-7,3} [/tex]