Suppose that u=log(2) and v=log(5). Find possible formulas for the following expressions in terms of u and/or v. Your answers should NOT involve any log's.

Question

a) log(0.4)=
b) log(0.08)=
c) log(2500)=

Answer 1

a) u - v

b) u - 2 v

c) 2 u + 4 v