The statement which is true of the base, b of a logarithmic function is; b > 0 and b = 1.
When the base of a logarithmic function is set to a negative number, it follows that;
Such logarithmic function wouldn't give us any real solutions! So the base CANNOT be negative. Putting together all 3 conclusions, we can say that the base of a logarithm can only be positive numbers greater than 1.
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