Jika Log 2 = a , Log 3 = b . Tentukan nilai Log 72 .
Matematika
marlaimin8grum
Pertanyaan
Jika Log 2 = a , Log 3 = b . Tentukan nilai Log 72 .
2 Jawaban
-
1. Jawaban novikrisdayanti98
log72 = log8.9 = log8+log9 = log2³+log3² = 3a+2b -
2. Jawaban whongaliem
㏒ 2 = a dan ㏒ 3 = b
㏒ 72 = ㏒ (2³ . 3²)
= ㏒ 2³ + ㏒ 3²
= 3 .㏒ 2 + 2 .㏒ 3
= 3.a + 2.b
= 3a + 2b