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anonymous

  • one year ago

can anyone help me with this matrix problem? picture in comment section or perhaps help me with the steps for the calculator

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    i dont understand this AT ALL.

  3. anonymous
    • one year ago
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    First put all the answers to the systems into a matrix and then multiply by the inverse of the matrix given to you and multiply it by the answers and it should give what so it would be the answers times the inverse be careful not to do it the other way around because you will get the wrong answer :)

  4. anonymous
    • one year ago
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    not at all. its complicated to me.

  5. anonymous
    • one year ago
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    @Loser66

  6. anonymous
    • one year ago
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    its fine, ill google it, but i literally had to learn this in an hour. im overwhelmed. thanks though. @Loser66 @artgirl

  7. anonymous
    • one year ago
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    Your welcome :)

  8. UsukiDoll
    • one year ago
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    blah... why can I just take those systems of equations, put it augmented matrix, and use row operations to get the RREF ?!

  9. jim_thompson5910
    • one year ago
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    first set up the matrix equation |dw:1439176350982:dw|

  10. jim_thompson5910
    • one year ago
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    multiply both sides of the matrix equation by the inverse matrix |dw:1439176488240:dw|

  11. jim_thompson5910
    • one year ago
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    notice how the inverse is on the left side of each multiplication |dw:1439176659454:dw|

  12. jim_thompson5910
    • one year ago
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    by definition, a matrix multiplied with its inverse will result in the identity matrix I |dw:1439176690759:dw|

  13. jim_thompson5910
    • one year ago
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    the identity matrix is basically a fancy form of "1" the identity matrix times any matrix is that same matrix I*X = X so the identity matrix goes away |dw:1439176806100:dw|

  14. jim_thompson5910
    • one year ago
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    do you see how to finish up?

  15. anonymous
    • one year ago
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    @jim_thompson5910 so just multiply ^

  16. jim_thompson5910
    • one year ago
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    yes multiply the inverse with the 3x1 matrix

  17. jim_thompson5910
    • one year ago
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    let me know what you get

  18. anonymous
    • one year ago
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    ok will do. give me a sec.

  19. anonymous
    • one year ago
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    {(2,-2,3)} @jim_thompson5910

  20. jim_thompson5910
    • one year ago
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    correct

  21. anonymous
    • one year ago
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    i actually understood how you did it's simple now. i appreciate your help!

  22. jim_thompson5910
    • one year ago
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    you're welcome

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