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log base 3 of x = lnx
The natural logarithm is the logarithm having base e, whereThe common logarithm is the logarithm to base 10.You can probably find both definitions in wikipedia.
The natural logarithm (ln) is used when you have log base e
The "base of the natural logarithm" is the number known as "e". It is approximately 2.718.
The common logarithm (base 10) of 2346 is 3.37. The natural logarithm (base e) is 7.76.