Log x + log 3x + log 9x +…+log 729x=14.Tentukan nilai x !
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Logaritma
log x + log (3x) + log (9x) + log (27x) +log(81x) + log (243 x) +log(729 x) = 14
log (x⁷.3.3².3³. 3⁴. 3⁵. 3⁶)=14
log (x⁷ 3²¹) = 14
x⁷. 3²¹ = 10¹⁴
(3² x)⁷ =10¹⁴
9x = 10²
x= 100/9