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Notamathgenius

  • one year ago

What would be the following system of equations looks like and augmented Matrix? x+y=5 3x+y=-1

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  1. amistre64
    • one year ago
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    what does your work look like?

  2. Notamathgenius
    • one year ago
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    I haven't done any, I was coming to look for help before I did anything, I don't wanna screw it up.

  3. amistre64
    • one year ago
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    you have to "screw it up" in order to learn it better

  4. amistre64
    • one year ago
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    pull off the coeffs, and run your row operations ...

  5. Notamathgenius
    • one year ago
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    Awww, work darn. I don't have any. I know the answer to the X and Y is (1,4)

  6. amistre64
    • one year ago
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    the the augment will have to end in a column of 1 4

  7. Notamathgenius
    • one year ago
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    None have "1,4" its all 3 -1 0 5

  8. amistre64
    • one year ago
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    assuming youve got the correct 1,4 solution, the augment will have to work out as x+y=5 3x+y=-1 1 1 5 1 0 1 3 1 -1 to 0 1 4

  9. terenzreignz
    • one year ago
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    What were those links for?

  10. Notamathgenius
    • one year ago
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    The Answers.

  11. amistre64
    • one year ago
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    to be more exact ... the "options"

  12. Notamathgenius
    • one year ago
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    Yea Options

  13. amistre64
    • one year ago
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    the solution of Ax = b (A:b) -> ( I : x)

  14. Notamathgenius
    • one year ago
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    I think I got the "answer" |dw:1368457593989:dw|

  15. amistre64
    • one year ago
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    that is not an augment ....

  16. Notamathgenius
    • one year ago
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    hmm

  17. Notamathgenius
    • one year ago
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    Let me ask my mom and ill come back if she can't explain it's easier if i can actually see the work being done

  18. amistre64
    • one year ago
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    and your links are not effective ....

  19. Notamathgenius
    • one year ago
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    It's because CA locked them -_-

  20. terenzreignz
    • one year ago
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    How could (1,4) be a solution of 3x + y = -1 ?

  21. amistre64
    • one year ago
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    magic ::)

  22. Notamathgenius
    • one year ago
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    It is.

  23. Notamathgenius
    • one year ago
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    I know it @amistre64 |dw:1368457855932:dw|

  24. amistre64
    • one year ago
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    that is the start of the augment, yes

  25. terenzreignz
    • one year ago
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    Well, you have three mods on the case, you can't possibly go wrong now :D

  26. Notamathgenius
    • one year ago
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    Well I am not really good in matrix, nor algebra. So I need all the help I can get.

  27. amistre64
    • one year ago
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    assuming: 3x - y = -1 was part of the question

  28. Notamathgenius
    • one year ago
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    Yes

  29. amistre64
    • one year ago
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    that is the matrix to augment, but is not the augmented matrix yet

  30. Notamathgenius
    • one year ago
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    1 thing why am I learning matrix in 9th grade?

  31. amistre64
    • one year ago
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    because they are important

  32. Notamathgenius
    • one year ago
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    But isn't that 11th and 12th grade stuff?

  33. amistre64
    • one year ago
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    apparently not :)

  34. Notamathgenius
    • one year ago
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    Gawdddddd well ok back to the subject

  35. amistre64
    • one year ago
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    there are 3 basic methods to solving systems of equations: substitution elimination matrix row operations matrix row operations are really just a combination of the other 2

  36. Notamathgenius
    • one year ago
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    I was thinking Substitution since I know it better

  37. amistre64
    • one year ago
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    substitution is not ideal for most situations ... its only effective on the hand picked easy peasy things they give you to practice on

  38. Notamathgenius
    • one year ago
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    Ohhhh ok :D

  39. terenzreignz
    • one year ago
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    I figure if you can do elimination, Matrix Row Operations shouldn't be a problem, it's essentially the same thing, without the variables...

  40. amistre64
    • one year ago
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    most solutions to real world problems require a computer to work on them, and the row operations are better suited to optimize a computers functionality

  41. Notamathgenius
    • one year ago
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    Ok can we explain to the imbecile (me) how to do so?

  42. amistre64
    • one year ago
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    row operations are pretty much the elimination method x + y = 5 : *-3 3x - y = -1 -3x -3y = -15 3x - y = -1 ------------- 0x -4y = -16 x + y = 5 0x -4y = -16 : /-4 x + y = 5 0x + y = 4 : * -1 x + y = 5 0x - y = -4 ----------- x + 0y = 1 x+0y = 1 0x + y = 4

  43. amistre64
    • one year ago
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    a matrix is a way to organize the same setup without the rest of the notation getting in the way

  44. terenzreignz
    • one year ago
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    Mother of details o.O

  45. Notamathgenius
    • one year ago
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    Ok i see now :D

  46. amistre64
    • one year ago
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    it takes some practice, but its fine :) good luck

  47. Notamathgenius
    • one year ago
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    I will take that too go :D thank you times a million @amistre64

  48. Notamathgenius
    • one year ago
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    Thank you too @terenzreignz

  49. terenzreignz
    • one year ago
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    I hardly did anything, but okay, no problem :)

  50. Notamathgenius
    • one year ago
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    It's fine at least you helped I would medal you too but i cant D: -gives medal- internet medal :D

  51. terenzreignz
    • one year ago
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    LOL Thanks :)

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