3log5=x,,,3log4=y. tentukan a) 12log80.b)60log75
Matematika
ronaldositumeang
Pertanyaan
3log5=x,,,3log4=y. tentukan a) 12log80.b)60log75
1 Jawaban
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1. Jawaban permatapu3maharani
a) ^p log 80/ ^p log 12
= ^3 log (4^2.5)/^3 log 3.4
= 2 ^3 log 4 + ^3 log 5 / ^3 log 3 + ^3 log 4
= 2y + x / 1 + y
b) log 75/log60
= ^3 log (5^2.3)/^3 log (4.5.3)
= 2 ^3 log 5 + 1/ ^3 log 4 + ^3 log 5 + 1
= 2 x + 1/y + x + 1