Question

Jika 3log 2=m dan 2log 5=n,maka 8 log 45 adalah...

Answer 1

=2log 45/2log 8
=2log 3pangkat 2. 5/ 2log 2pangkat 3
=2. 2log 3 + 2log 5/ 2log 2 + 3. 2log 2
=2.1/m + n / 1 + 3.1
=2/m+n/4

Answer 2

³log 2 = m
²log 5 = n

⁸log 45 = ³log 45/²log 8
            = ²log (3².5)/²log 2³
            = (²log 3²+²log 5)/²log 2³
            = (2.²log 3+²log 5)/(3.²log 2)
            = ((2/m) + n)/3
            = (2+mn)/3m