diketahui 5 log 3 = a dan 3 log 4= b . nilai dari 12 log 75

Kelas 10 Matematika
Bab Logaritma

¹²log 75 = (³log 75)/(³log 12)
¹²log 75 = (³log (5² . 3)) / (³log (4 . 3))
¹²log 75 = (³log 5² + ³log 3) / (³log 4 + ³log 3)
¹²log 75 = (2 . 1/a + 1) / (b + 1)
¹²log 75 = ((2 + a)/a) . 1/(b + 1)
¹²log 75 = (a + 2)/(ab + a)