Is M22 spanned by the following 2x2 matrices:
semi colon means start of new row.
The Attempt at a Solution
Is this essentially asking me to check if the given matrices form a spanning set? So are we checking for linear independence? Or are we saying that ok lets pick an arbitrary 2x2 [a,b;c,d] and see if we can come up with a formula for a b c and d in terms of 4 scalars?
I checked for linear independence, and turns out that these 4 matrices are not linearly independent. If they were than after row reduction, I should have gotten I.
Any help on this would be appreciated.