The Number e, Natural Logarithm and Common Logarithm (with worksheets, videos, games & activities)
CHM1 ES: Natural Logarithms Collection
Change of Base Formula or Rule - ChiliMath
Evaluating natural logarithm with calculator (video) | Khan Academy
Logarithms Tutorial
Definition of a Logarithmic Function For x > 0 and b > 0, b≠ 1, y = log b x is equivalent to b y = x The function f (x) = log b x is the logarithmic function. - ppt download