i know that in order to prove that one group of vectors are a part of another(adsbygoogle = window.adsbygoogle || []).push({});

i need to stack them up

i did row reduction and i dont know how to extract a vector for the group

http://img384.imageshack.us/img384/2546/55339538nk4.gif [Broken]

this came from this question part 2

http://img116.imageshack.us/img116/1152/25587465vv2.gif [Broken]

in the U group i have equations with "k"

i dont know what vectors to take?

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# Homework Help: How to prove subspace here

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