please give an example to solve logs.....

remember to solve problem of log folowing formula sould be kept in mind
(1)loga (b) =loga/logb
(2)log a (b) =k,then a^k=b,
(3)log a -log b =log(a/b)
(4)log a+ log b =log(ab)
(5)log a =b ,then a=antilog (b)
These formulas should be kept in mind to solve the problem in logarithm .These are more than enough to solve any problem in logarithm.
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