Question

Diketahui 5log3 = a dan 3log4 = b. nilai 4log15 =....

Answer 1

⁴log 15 = ³log 15 / ³log 4
= (³log 3 x 5) / ³log 4
= (³log 3 + ³log 5) / ³log 4
= (1 + (1/a)) / b
= (a + 1)/ab