jika 2log3=a. dan 3log5=b .maka5log20
Matematika
sajay
Pertanyaan
jika 2log3=a. dan 3log5=b .maka5log20
1 Jawaban
-
1. Jawaban Anonyme
^5log20, misal ubah pd basis 2
= ²log20/²log5
= ²log(2².5)/²log5
= (2.²log2 + ²log5)/²log5
= (2 + ²log3.³log5)/(²log3.³log5)
= (2 + ab)/(ab)