Maths in uses?

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dragon4spy

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Dec 22, 2003
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In my country, Cambodia, the education is not so practical. In my class in high school, most math lessons are tough as theories alone, no practice or experiment.

Mostly, i can find the solution of a math problem, but i always questioned that why find the solution? what is it used for? What is the main purpose of complex numbers, derivation, integration, etc...? (i can't find the exact name, since my teachers use french terms in math)

Please... Any body recommend any good books or websites that explain about the uses of math.

It would be better if could understand how they work and use 'em in my app.
 
Math is the basis of programming, a computer is a large, incredibly fast calculator. Everything falls down to Binary, Binary manipulation is the base of how a computer works, you can get by knowing how to add, subtract, multiply and divide. Knowing Fractions and decimals may also be necessary depending on what programming you do, if you mainly make office applications then it depends on the purpose of the applications.
 
Math in programming is very important. I found it is uses mainly when writing games, implementing encryption or compression, optimising app, and etc...

The problem is I don't understand what is each of them used for?
 
What is the main purpose of complex numbers, derivation, integration, etc...?

Complex numbers - probably the biggest thing that you do with complex numbers is to create Fourier Transforms. These are the little bouncy things you see when you open up Windows Media Player/Winamp and you can set/filter the bass or the treble by various frequency knobs.
Derivation and Integration go side by side - although it is probably better if you do the series by yourself, it is possible to make a program to calculate derivatives and integrals. The most common usage of these (IMO) is to calculate a rate of change when something doesn't play nice and boring.
For instance, flying particle/missile simulation. Making an enemy throw bullets at you and how to make enemies move out of the way at a desired speed. How to make a ball bounce around a pool table. How to scroll a box to the top of a form slowly and how to fade a box into view. Innumerable graphics applications (making an object jump when you click on it).
Is this what you were asking?
 
Yup! But i need more answers for other maths besides i've described, and also what would they applied in real world?
 
Well, all of the above take place the same way in the 'real world' and do the exact same thing (flying particles/missiles, fluid flow, heat, building stability, forecast temperatures, population, etc.) for derivation/integration (physics covers a lot of 'real world' applications)
Complex numbers are still good for Fourier Transforms (finding out what frequencies are contained and how to digitize sound, frequency circuit analysis so that we can watch TV and listen to the radio, etc.) and other things which I can't think of right now.

You should probably search Google for other math that you have not specified and its 'real world' applications. :)
 
Surely, Google doesn't suck as it is the biggest search engine. You must've been using it incorrectly. 'Real World Mathematics' yields fine results. Tack on 'complex numbers' and you get more specific results. :)
 
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