Question 666062
by definition of log

{{{log(a)(x) = n}}} means that {{{a^n = x}}}

so,

{{{log(a)(1) = 0}}} means that {{{b^0 = 1}}} which is TRUE, by definition of exponents any number raised to the zero power equal to  {{{1}}}

it proves that {{{log(a)(1) = 0}}}