4 log 16proof. Page 30. Created by T. Madas. Created by T. Madas. Question 52 (****). Solve the following logarithmic equation. 10. 10. 10 log ( 4) log ( 16) 1 2log x x.log2 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}}=