Wednesday, July 31, 2013

1/2 (log7 x + log7 8) = log7 16

1/2 (log7 x + log7 8) = log7 16 
log%287%2Csqrt%288x%29%29-log%287%2C16%29=0 

log%287%2Csqrt%288x%29%2F16%29=0 

raising 7 to both sides yields: 
7%5Elog%287%2Csqrt%288x%29%2F16%29=7%5E0 
i.e. 
sqrt%288x%29%2F16=1 

so that 
x=32 

:)
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