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OpenStudy (anonymous):
simplify log4 81^-2
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OpenStudy (anonymous):
Recall base of the log means its divided by. E.g. log4 81 = log81/ log4 Now consider, log4 81^-2 = log 81^-2/ log 4 log 81^-2 = -2log 81 log 4 = log 2^2 = 2log 2 >> -2log81/ 2 log2 = -log81/log2 = -4log3 / log 2= -4log3 - log2
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