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There is no answer - it is an error: negative numbers do not have logarithms. The log if a number tells to what power the (positive) base must be raised to get the number. Raising any positive number to any power will never result in a negative number, so it is an error to try and take the log of a negative number.
Logs are defined only for positive numbers so the log of a negative number does not exist.
Yes. The logarithm of 1 is zero; the logarithm of any number less than one is negative. For example, in base 10, log(0.1) = -1, log(0.01) = -2, log(0.001) = -3, etc.
Log(y) can be any number, positive or negative, no limits. It all depends on the value of 'y'.
the log of a number, X, is equal to some value , N, and by definition 10 to the N power =X 10 to any power is always positive