SRL Archive - Help and Support

I saw some discussion about Logarithms, and now I want to know what'd they be most useful for, in programming.

Thanks in advance…

Calculating Roots.

The obvious, tell me what for in programming do I want to calculate roots?

Distances.

They are also very usefull in displaying certain results.
Results like, growths in biology or economics. There are more uses though.
Solving stuff in algebra, etc.

Hmm, let's see…


C^2 = A^2 + B^2

Now, tell me how do logs help me there :)

(c^2 = A^2 + B^2) ^0.5 = C=a+b

This is basicly it:

C=a+b

Does the human kind know how to calculate a and b from c alone? Sounds pretty much impossible… I know you can get one side if you have one angle and two sides :/

In programming they are pretty useless. People use the for huge numbers and small numbers. A logarithm is the inverse of 10^x.

Okay, do you know about the a or b = ?

From: Markus
(c^2 = A^2 + B^2) ^0.5 = C=a+b

Cant do that; it'd be C = Sqrt(a + b) (or c = (a + b) ^ .5 if you want to do it that way)

[OFFTOPIC]

:(

You guys are so good at math.

[/OFFTOPIC]

From: Markus
(c^2 = A^2 + B^2) ^0.5 = C=a+b

What in God's name is that…that's incorrect :p

wtf is this lol?

caculas :P?

im in algebra 2 and never seen or heard of this YET

Logarithm is one of those epic words that you will get when you google "BenLand100".

From: ~~Joker~~
wtf is this lol?

caculas :P?

im in algebra 2 and never seen or heard of this YET

I believe they mention it towards the end of algebra 2 and a couple of times in pre-calculus.

Logarithms are useful for exponential growth problems. Interestingly you can also express sin, cos, and tan in terms of a natural log. So in programming, perhaps you only want to us a log call to reduce the size of your program (for whatever insane reason). In that instance, it could be somewhat useful.

Its just basic logarithms and exponentials. if log[base10](x) = y, then 10^y = x. Not really any use in programming that I know of though, but if done with e as the base, then they somewhat realistically model some events in nature, such as population growth among others

I remember doing Logarithms in Pre-calc in High school. I haven't taken a math course since. (gonna suck when i do) But I recall there is Log[Base e](x) and Log[Base 10](x) that are the most common. And you can have any Base with Log technically…. There's a way to even do it on the calculator, like 3Log(x)/4Log(x) or something like that .

Whats the rounded number for e? like 2.4 something lol [with infinite decimals]

From: Narcle
I remember doing Logarithms in Pre-calc in High school. I haven't taken a math course since. (gonna suck when i do) But I recall there is Log[Base e](x) and Log[Base 10](x) that are the most common. And you can have any Base with Log technically…. There's a way to even do it on the calculator, like 3Log(x)/4Log(x) or something like that .

Whats the rounded number for e? like 2.4 something lol [with infinite decimals]

For your first point, you can change the base of any logarithm so that it suits your needs.

Log (Base 7) 9 = Log 9/Log 7.

And the rounded number for e is 2.72.

It can be used for the PH level but idk how that would connect to programming. Those suck btw they are stupid. For everyone who hasn't learned them yet, brace yourself because they are so boring.

Boring is subjective :)