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The logarithmic function is not defined for zero or negative numbers.

Logarithms are the inverse of the exponential function for a positive base. Any exponent of a positive base must be positive. So the range of any exponential function is the positive real line. Consequently the domain of the the inverse function - the logarithm - is the positive real line. That is, logarithms are not defined for zero or negative numbers.

(Wait until you get to complex analysis, though!)

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Q: Why negative numbers don't have logarithim?

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They will be negative numbers as for example -5+(-7) = -12

The product of three negative numbers is negative.

No, it is measured in positive numbers but it can be represented by negative numbers.

12

Yes, the product of three negative numbers is always a negative number.

Related questions

The pH of a solution is the negative logarithim to base 10 of the Hydrogen ion concentration.

yes and it means the negative logarithim to base 10

p usually means the negative logarithim to base 10

No, the pH is the negative logarithim to base 10 of the Hydrogen Ion concentration.

we dont know yet.....

um blah blah dont forget the integer keep trying

They will be negative numbers as for example -5+(-7) = -12

No. Whole numbers are counting numbers and zero.

The product of three negative numbers is negative.

The product of three negative numbers is negative.

Where do we see negative numbers

It belongs to the set of negative rational numbers, negative real numbers, fractionall numbers, rational numbers, real numbers.