4 log 16The value of lo g 4 16 is 2, since 16 can be expressed as 4 2. Therefore, the logarithm simplifies to 2 by applying logarithmic properties. This means 4 must be raised tolog2 16 = 4, since 24 = 2 × 2 × 2 × 2 = 16. · Logarithms can also be negative: log 2 1 2 = − 1 {textstyle log _{2}!{frac {1}{2}}=