Question

2^log 9 = k , maka nilai 8^ log 81 adalah?

Answer 1

²log 9 = k
²log 3² = k
2 (²log 3) = k
²log 3 = k/2
⁸log 81 = (2³)'log 3⁴
= (4/3) ²log 3
= (4/3)(k/2)
= (2/3)k