Dik:2log3=p dan 3log5=q tentukan 12log75

log 75/ log 12 = 3 log 5x5x3/ 3 log 4x3 = 3log5+3log5+3log3/3log4+3log3

2log 3 =p
1/3log2 =p
3log2 = 1/p,, jadi 3log4 = 3log2^2 = 2. 3log 2 = 2/p

q+q+1/ 2/p+1 = 2q+1 / (2+p)/p = (2pq+p)/ p+2

semoga membantu