Does anyone know any websites that can explain logs? or maybe if u could explain it? thanks
2006-12-19 10:14:48 · 5 answers · asked by chenying702 1 in Science & Mathematics ➔ Mathematics
A log must be based on a base. You usually use base 10 though in some cases the base is e (2.7----). A log of a number is the power that you must raise 10 (or e) to in order to obtain that number. For example the log of 10 is 1, the log of 100 is 2. Numbers between have fractional logs.
To multiply 2 numbers you just add the logs and then find the number that has the resulting log.
Slide rules used to be based on logs and were able to multiply by just sliding a rod which actually added the logs.
2006-12-19 10:19:05 · answer #1 · answered by Barkley Hound 7 · 0⤊ 0⤋
The logarithm is the mathematical operation that is the inverse of exponentiation (raising a constant, the base, to a power).
In other words, its another way to rewrite an exponent. Instead of saying A^B=C, you can say logA(C)=B (Pronounced "Log base A of C equals B"). Hopefullly the link can help you better.
2006-12-19 18:20:15 · answer #2 · answered by joeyconnelly 1 · 0⤊ 0⤋
I googled logarithms and several web sites came up. The r les of logarithms are explained: addition, subtraction, ect-- they aren't difficult at all.
2006-12-19 18:21:32 · answer #3 · answered by Empress Sky 2 · 0⤊ 0⤋
Yep. Here's a good, albeit long, explanation.
http://www.ping.be/~ping1339/exp.htm
2006-12-19 18:17:24 · answer #4 · answered by jade_falcon 2 · 0⤊ 0⤋
http://www.themathpage.com/aPreCalc/logarithms.htm
http://www.sosmath.com/algebra/logs/log1/log1.html
2006-12-19 18:18:59 · answer #5 · answered by ewetaunt 3 · 0⤊ 0⤋