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Theory of logarithms. laws of logarithms. Log (M*N)= log M + log N Examples i.log 1000 =log (100*10) =log 100+ log 10 = 2+1 = 3 ii. Log 3 81 = log 3 (27*3) = log 3 27 +log 3 3
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laws of logarithms • Log (M*N)= log M + log N Examples i.log 1000 =log (100*10) =log 100+ log 10 = 2+1 = 3 ii. Log 3 81 =log 3(27*3) =log 327 +log33 = log 333+ log331 = 3+ 1 = 4
laws of logarithms • Log( M/N )=log M –log N examples i.log (20/5) =log 20 –log 5 ii.