(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Is the set of invertible 3x3 matrices a subspace of 3x3 matrices?

2. Relevant equations

3. The attempt at a solution

I think no - the 'neutral 0 element' is not in the subset since the 3x3 0 matrix is not in the subset. Am I right? The book says it's not a subspace because it's not closed under addition, but I'm not sure if my reason is also correct.

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# Homework Help: Invertible 3x3 matrices a subspace of 3x3 matrices

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