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2014-08-16T20:42:51+07:00
2log 3 3lg 5 = 2 log 5 = ab sifat logaritma
maka

2 log 5 + 2 log 3 = ab + a
2 4 2
2014-08-16T20:45:57+07:00
2 log 15
= 2 log (3x5) *pake sifat x log (y+z) = x log y + x log z
= 2 log 3 + 2 log 5 *pake sifat x log y . y log z = x log z
= a + 2 log 3 . 3 log 5 
= a + a.b
= a(1+b)
4 2 4