1. Logarithm
If a is a positive real number, other than 1 and am = x, then we write m = loga x and we say that the value of log x to the base a is m.
Examples :
1. 103 1000 = log10 1000 = 3.
2. Common Logarithms :
Logarithms to the base 10 are known as common logarithms.
3. Properties of Logarithms :
1. loga(xy) = loga x + loga y
2. loga(x / y) = loga x - loga y
3. logx x = 1
4. loga 1 = 0
5. loga (xp) = p(loga x )
6. loga x = 1 / logxa
