Question

Selesaikanlah persamaan logaritma berikut.
1) Log (19- 3x) = 2
2) ²log x + log 4 = 2

Answer 1

Verified answer

Jawab

(1) 
log (19 - 3x)= 2 = log 10²
19 - 3x = 100
-3x = 81
x = -27

Answer 2

Verified answer

Logaritma

1][
log (19 - 3x) = 2
19 - 3x = 10²
3x = 19 - 100
x = -81/3
x = -27

2][
²log x + log 4 = 2
²log x = log 10² - log 4
²log x = log (100/4)
x = 2^log 25