Log 3 = 0,477 , dan log 5 = 0,644Nilai Log 375 adalah (?).... Question from @Megatiara

August 2018 2 26 Report

Log 3 = 0,477 , dan log 5 = 0,644
Nilai Log 375 adalah (?)

IcukSugiarto $\bold{\underline{Solution:}}\\log\ 375\\=log\ (3 \times 125)\\=log\ 3+log\ 125\\=log\ 3+log\ 5^{3}\\=log\ 3+3\ log\ 5\\=0,477+3(0,644)\\=0,477+1,932\\=2,409$

$====================================\\\bold{Note:}\\remember\ this\ formula:\\\boxed{~^{a}log\ (b \times c)=~^{a}log\ b+~^{a}log\ c}\\\\\boxed{~^{a}log\ b^{m}=m~^{a}log\ b}\\\\\boxed{~^{a}log\ b= \frac{~^{p}log\ b}{~^{p}log\ a} }\\\\\boxed{~^{a}log\ b= \frac{1}{~^{b}log\ a} }\\\\\boxed{~^{a}log\ a=1}\\\\\boxed{~^{a}log\ b \times ~^{b}log\ c=~^{a}log\ c}\\\\\boxed{~^{a}log\ (\frac{b}{c}) =~^{a}log\ b-~^{a}log\ c}$

3 votes Thanks 2

IndahFaridah28 Log 375 = log 3 . log 5 . log 5 . log 5
=0,477 + 0,644 + 0,644 + 0,644
= 2,409

0 votes Thanks 2

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Apa yang di maksud dengan ekonomi terapan ?? dan berikan contohnya ..

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