1. Jika x=0,1111.... dan y=0,3333...maka nilai dari
ylog x sama dengan...
X=0,1111..à 1/9
Y=0,3333..à1/3
1/3log
1/9
3log
32
2
2.
Jika log 2=p, log 3=q, maka log 108=..
Log 108 = log 22x33
=
log 22 + log 33
=
2.log2 + 3.log 3
=
2p + 3q
3.
Jika 4log(x2+x) - 4log(x+1)
= 2, maka nilai x =..
4log (x2+x) = 4log 42
(x+1)
(x2+x) = 42
(x+1)
x(x+1) = 42
(x+1)
X = 42
X = 16
4.
(alog(2x-1))(3log a) = 2 ,
maka nilai x=...
(3log
a(alog(2x-1)= 3log 32
3log
(2x-1) = 3log 32
2x-1 = 32
2x = 9 + 1
X =5
5.
Jika 4log(2x+1).5log 2 = 1,
maka nilai x =
5log
2. 2log(2x+1)1/2 = 5log 5
5log (2x+1)1/2
= 5log 5
(2x+1)1/2
= 5
2x+1 = 25
2x = 24
X = 12