Logarithms

Logarithms The base a logarithm of x, log_{a}x, is the power to which you need to raise a in order to get x. Symbolically, log_{a}x = y means a^{y} = x
Notes 1. log_{a}x is only defined if a and x are both positive, and a 1. 2. log_{10}x is called the common logarithm of x, and is sometimes written as log 10. 3. log_{e}x is called the natural logarithm of x and is sometimes written as ln x. log_{2}8 = 3 because 2^{3} = 8 Properties:
