Question

Diketahui 2 log 3 = x dan 2 log 10 = y. Nilai 6 log 120 adalah

Answer 1

2log3 = x, 2log10 = y
6log120 = log120 : log6
2log (2.10.2.3) : 2log (2.3)
2log2+2log10+2log2+2log3 : 2log2 + 2log3
1+y+1+x : 1 + x
= x+y+2 : x+1
= y+1 + x+1  
  x+1    x+1
= y+1 + 1
   x+1