Question

Dik 2 log3 = x dan 2 log 5 = y maka 5 log15 adalah???

Answer 1

^5 log 25 = ^5 log (5 x 3)
              = ^5 log 5 + ^5 log 3
              = ^5 log 5 + ^5 log 2.² log 3
              = 1 + (1/y)(x
              = y/y + x/y
              = (x + y)/y

Answer 2

2 log 5 / 2log15
y / 2log(3.5)
y / 2log 3 + 2 log 5
y / xy