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81THE1
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Homework Statement
write the matrices M which, when acting on A, divides the second row by a factor a, while leaving the other rows unchanged
Homework Equations
I solved a question on the Gauss-Jordan inversion which showed converting the matrix to the identity would also turn the identity into the inverse; I was thinking for this problem I would take the inversion of A and multiply it by my desired vector to give my answer? Is there a simpler way to do this? assuming my way is correct...
The Attempt at a Solution
Thanks