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anonymous

  • 5 years ago

Find the inverse for the matrix, if it exists. |1 1 1| |2 1 1| |2 2 3|

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  1. amistre64
    • 5 years ago
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    put it against the identity matrix and try to convert it into the identity matrix.....

  2. amistre64
    • 5 years ago
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    [1 1 1 | 1 0 0] [2 1 1 | 0 1 0] [2 2 3 | 0 0 1]

  3. amistre64
    • 5 years ago
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    the rest of it looks like a mystery lol

  4. anonymous
    • 5 years ago
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    for real ? OMG it's my midterm :(

  5. amistre64
    • 5 years ago
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    give me a minute to review this ;)

  6. amistre64
    • 5 years ago
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    [1 1 1 ] [a b c] [1 0 0] [2 1 1 ] * [d e f] = [ 0 1 0] if anything else [2 2 3 ] [g h i] [0 0 1]

  7. amistre64
    • 5 years ago
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    let me try this;: [1 0 0] [2 -1 -1] let me try that as the inverse... [-2 0 1]

  8. amistre64
    • 5 years ago
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    ......not quite seeing it here..

  9. amistre64
    • 5 years ago
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    the matrix inverter says its: [-1 1 0] [4 -1-1] [-2 0 1]

  10. amistre64
    • 5 years ago
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    http://www.math.ubc.ca/~israel/applet/mcalc/matcalc.html

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spraguer (Moderator)
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