Hi, I have a question:(adsbygoogle = window.adsbygoogle || []).push({});

I am trying to find an isometry such that T(aU+bV)≠aT(U)+bT(V).

I have tried so many possibilities. I gave T(X)=MX given that M is a matrix that doesn't have an inverse. But i still can't find a nice matrix that will make the proposition possible.

Help please

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# Trying to find an isometry T(X)=MX

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