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Linear Algebra I exam

Discussion in 'Off Topic' started by Puncher, Feb 15, 2002.

  1. Puncher

    Puncher AFA member

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    In four hours I will be writing the second part of my linear algebra exams. I "only" need to get 23 of 50 points. Wish me luck!
     
  2. The_Fur

    The_Fur Back in black

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  3. MadWoffen

    MadWoffen Soon! ©

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    Bonne merde!
    Break a leg!
     
  4. The_Pikeman

    The_Pikeman Also known as Howski

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    god damm I HATE that subject. Good luck.
    -How.
     
  5. Kibbles-N-Bits

    Kibbles-N-Bits New Member

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    May a giant hamster NOT fall out of the sky and crush you in your sleep. GL man :tup:
     
  6. Midwinter

    Midwinter sneaky bastard

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    Good luck, Puncher...
     
  7. ElectricSheep

    ElectricSheep Tommy Vegas

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    Linear Algebra isn't too bad, I just hope they don't make you invert a 4 by 4 matrix by HAND.

    It does come in handy for things like numerically solving Laplace's Equations over all space for an irregularly mapped coordinate system.
     
  8. Freon

    Freon Braaaaiinss...

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    arg ! don't speak of linalg !!! I'm still on vacations ;)

    EDIT: oh, and good luck :)
     
    Last edited: Feb 15, 2002
  9. Hadmar

    Hadmar Queen Bitch of the Universe

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    Viel Glück :)
     
  10. peachz

    peachz BANNED

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    Good luck Puncher...




    :)tdown: Sounds fun... :p)
     
  11. Lolo Konijn

    Lolo Konijn Huppel huppel

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    I did it in just 3 times :rolleyes:
    (altough it was the easiest subject I had so far :D )

    GL :)
     
  12. Goat Fucker

    Goat Fucker No Future!

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    ES...you are a living calculator! its inhuman!

    Ohh well, guess i should have showed up at school once in a while...on secound thought no, i was compleately right and justified in staying the hell away :D
     
  13. ElectricSheep

    ElectricSheep Tommy Vegas

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    Hehe.

    This might frighten you, but I actually know how to take the square root and cube root of <em>any</em> given number (including decimals) by hand on a sheet of paper. Its kinda like long division, and helps in a pinch when you forget your calculator on an exam...
     
  14. Catalyst

    Catalyst science begets death

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    God damn you smart math people make me sick. I'm a programmer, could actually use the skills, and don't have them :(
     
  15. agent

    agent <span id=spObj style="FILTER:Glow(color=#5D025E);w

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    :rolleyes:

    i can find the nth root of any number of arbitrary precision. the general algorithm is called Newton's Method in North American calculus textbooks and finding roots of real numbers is only one of its applications:

    x_(i+1) = x_(i) - f(x_(i))/f'(x_(i)) (where x_(i)'s are approximations of the root of f)

    and let

    f(x) = x^n - a
    then f'(x) = (n)x^(n-1)

    to find the nth root of a.

    [edit] check this out: http://mathworld.wolfram.com/NewtonsMethod.html
    ("A fractal is obtained by applying Newton's Method to finding a root of z^n - 1 = 0" ie.: nth complex root of 1) [/edit]
     
    Last edited: Feb 15, 2002
  16. Puncher

    Puncher AFA member

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    Well, it's all over now. Going by my gut feeling I should have enough points.

    @electric sheep: one of the things we had to do was inverting a 3*3 matrix... I half forgot how to do it. Grrr.

    The rest was relatively ok. Eigenvalues, characteristic polynom, minimal polynom, determinants,...

    Either way it's time to get drunk after I'm finished typing this :)
     
  17. agent

    agent <span id=spObj style="FILTER:Glow(color=#5D025E);w

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    [ A | I ] ~ [ I | A^(-1)] if det(A) =/= 0 :p
     
  18. jaeg

    jaeg PopeyeTurbo

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    Man I hate smart people. :rolleyes:
     
  19. Keganator

    Keganator White as Snow Moderator

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    Whaa??? I don't know what the fu<b></b>ck you are all complaining about linear algebra about... it's all addition, subtraction, and multiplication! :lol:

    At least the first part is... :con:
     
  20. Puncher

    Puncher AFA member

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