What is the inverse of this matrix?

Find the inverse of the matrix  https://latex.codecogs.com/gif.latex?%5Cdpi%7B300%...  

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  • Alan
    Lv 7
    5 months ago
    Favourite answer

    one method finding the inverse

    is to convert the matrix to the identity matrix 

    by row operations  

    while repeating every step on the identity 

    matrix

    Doing this gives 

    [

    (4/9)    (-4/9) (-1/3)

    (-1/9) (1/9)    (1/3)

    (5/9)  (4/9)   (-2/3)   ]

    See image for step by step 

    Attachment image
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