find the inverse of the matrix using elementary column transformation
![\left[\begin{array}{ccc}2&1&3\\4&-1&0\\-7&2&1\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B1%26amp%3B3%5C%5C4%26amp%3B-1%26amp%3B0%5C%5C-7%26amp%3B2%26amp%3B1%5Cend%7Barray%7D%5Cright%5D "\left[\begin{array}{ccc}2&1&3\\4&-1&0\\-7&2&1\end{array}\right]")
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Answer:
l Sirious ly don't know how to do this
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Answer:
1) Swap rows.
2) Multiply or divide each element in a a row by a constant.
3) Replace a row by adding or subtracting a multiple of another row to it.
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