Question

Nilai x yg memenuhi persamaan ^2logx + ^2log2x = 3 adalah...

Answer 1

2 log x + 2 log 2x = 3
2 log (x).(2x) =3
2 log 2(x^2) =3
2 log 2 + 2 log (x^2) = 3
karena 2 log 2 = 1 maka
1 + 2 log x^2 =3
1 + (2/1) (2 log x) = 3
1 + 2 (2 log x) =3
maka x = 2
sehingga 1 + 2 ( 2 log 2) =3
dimana 1 + 2 (1) = 3
:)