5.4 Persamaan yang Melibatkan Logaritma (Contoh 4 & 5)
Contoh 4:
Selesaikan setiap persamaan yang berikut.
Penyelesaian:
![](https://4.bp.blogspot.com/-M_oUfWs9Djg/V3oroajdcxI/AAAAAAAAEII/ZrZP_93T-i8pgujfeI_4OKDUbc6dcUtXQCLcB/s400/Picture32.png)
![](https://4.bp.blogspot.com/--0wqTvjTtGU/V3orta4B-LI/AAAAAAAAEIM/DsCFcuVA_Hod50eM9nsbmVkPZAQtII8cwCLcB/s400/Picture33.png)
Contoh 5:
Selesaikan setiap persamaan yang berikut.
(a) log4
x = 25 logx
4
(b) log2 5√x + log4 16x = 6
(b) log2 5√x + log4 16x = 6
Penyelesaian:
![](https://3.bp.blogspot.com/-PJPgbfFNHrA/V3or0PEpUSI/AAAAAAAAEIQ/-_lzv52SciAyrwF71UTOJmkp6BRm9CDgwCLcB/s400/Picture34.png)
![](https://1.bp.blogspot.com/-9DrqRMjPBsA/V3or4c0mTiI/AAAAAAAAEIU/7dxxEU96IlkUJn0SEcnNWxgOohO-RhSNwCLcB/s400/Picture35.png)