Jika 8Log5=a maka tentukan A.4 log 1/5 dan B. 2log( akar 5). Tolong dong jelaskan caranya dgn Jelas!!!

Logaritma

Diketahui:
^8 log 5 =a
^2^3 log 5^1=a
1/3.^2 log 5=a
^2 log 5 =a :(1/3)
^2 log 5 = a x(3/1)
^2 log 5 = a x 3
^2 log 5 = 3a

Ditanya:
a.^4 log 1/5?
b.^2 log √5?

Jawab:
a.^4 log 1/5=
^4 log 5^-1=
^2^2 log 5 ^-1=
-1/2.^2 log 5
-1/2.3a
-3/2a
– 1 1/2a
——–

b.^2 log √5=
^2 log 5^1/2=
^2^1 log 5 ^1/2=
(1/2)/1 ^2 log 5=
1/2 ^2 log 5=
1/2.3a=
3/2a=
1 1/2a
——-

Demikian semoga membantu dan bermanfaat!