hasil dari 3log4 x 4log5 x 5log6 x 6log3

[tex] ^{3} log(4) \times {}^{4} log(5) \times {}^{5} log(6) \times {}^{6} log(3) \\ = {}^{3} log(3) \\ = 1[/tex]
[tex] {}^{a} log(b) \times {}^{b} log(c) \\ = {}^{a} log(c) [/tex]