jika ²log3=a dan ²log5=b maka ²log60 adalah

²log 60 = ²log (2×2×3×5)
= ²log 2 + ²log 2 + ²log 3 + ²log 5
= 1 + 1 + a + b
= 2 + a + b

[tex]2log60 = \frac{log60}{log2} \\ \frac{2log5 + 2log12}{2log2} \\ \frac{b + 2log3 + 2log4}{1} \\ b + a + 2log2 + 2log2 \\ b + a + 1 + 1 \\ b + a + 2[/tex]