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Thread: What is the use of matrices?

  1. Nov 1st, 2001, 02:18 PM #1
    Gray Duck
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    Question What is the use of matrices?

    I'm new to this concept and I wanted to know how useful is to use a matrix. Give me an example of a simple problem and a difficult problem that could be solved with this tool.
    Last edited by Gray Duck; Nov 1st, 2001 at 04:51 PM.
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  2. Nov 1st, 2001, 04:00 PM #2
    kedaman
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    matrices are used to mathematically express systems of linear equations, used in many fields of physics and most important, for calculations done with computers, since matrices are fast and effective to operate. What are you going to study?
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  3. Nov 1st, 2001, 04:19 PM #3
    Gray Duck
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    I don't know exactly what am I going to study, but something around physics and/or mathematics.

    I already found many mathematic-related books about this and that. Yesterday I found one about matrices which interested me because it said matrices were very used in computers.

    I'm still in highschool so I need to know if it's a good idea to invest my time in this or not. What you said is still a bit vage to me, can you give a more concret example?
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  4. Nov 1st, 2001, 04:28 PM #4
    kedaman
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    matrices start to show up at uni now, in electronics and control Engineering, i expect they show up everywhere where you do more advanced calculations on physical systems.
    You won't have need for them soon, but if you really want something interesting, try making your own 3d-engine, and you'll see how usefull matrices are for rotation movement and projections
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    writing software in C++ is like driving rivets into steel beam with a toothpick.
    writing haskell makes your life easier:
    reverse (p (6*9)) where p x|x==0=""|True=chr (48+z): p y where (y,z)=divMod x 13
    To throw away OOP for low level languages is myopia, to keep OOP is hyperopia. To throw away OOP for a high level language is insight.
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  6. Nov 1st, 2001, 05:22 PM #5
    thinktank
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    u can solve linear equations using matrix..
    try this java applet
    http://www.ma.psu.edu/~herzog/applets/lin_equation/
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