jika log 2=x dan log 3=y tentukan log 36

36 / 3 = 12, 12 / 3 = 4, 4 /  2 = 2 jadi log 36 = 2log3 + 2log2 = 2y+2x 

log2 = x
log3 = y
log 36 = [tex]log2^{2}.3^{2}[/tex] = 2 x log(2)(3) = 2 x (log 2 + log 3) = 2 (x + y) = 2x + 2y