sebutkan kaidah-kaidah logaritma dan berikan contohnya

Kaidah-Kaidah Logaritma

1) alog x.y = alog x + alog y

2) alog x/y = alog x – alog y

3) alog xr = r alog x

4) alog x = alog b. blog x

5) alog b. blog a = 1

6) alog a =1

7) alog 1 = 0



Contoh:

1) 2log (16.32) = 2log 16 + 2log 32 = 2log 24 + 2log 25= 4 + 5 = 9

2) 6log (1296/36) = 6log 1296 – 6log 36 = 6log 64 – 6log 62 = 4 – 2 = 2

3) 4log 64 = 4log 43 = 3 4log 4 = 3

4) 3log 81 = 3log 9. 9log 81 = 2. 2 = 4

5) 4log 16.16log 4 = 1

6) 7log 7 =1

7) 5log 1 = 0