Upvoting indicates when questions and answers are useful I thought that i can use any two linear independent vectors for this purpose, like $$ ima = \ { (1,0,0), (0,1,0 What's reputation and how do i get it
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I want to find the basis of kera ker a
X2 −x3 = 0 x 2 x 3 = 0, and assigned x3 = α x 3 = α. Thank you arturo (and everyone else) I managed to work out this solution after completing the assigned readings actually, it makes sense and was pretty obvious Could you please comment on also, while i know that ker (a)=ker (rref (a)) for any matrix a, i am not sure if i can say that ker (rref (a) * rref (b))=ker (ab)
Is this statement true? just out of my curiosity? To gain full voting privileges, It is $$ kera = (1,1,1) $$ but how can i find the basis of the image What i have found so far is that i need to complement a basis of a kernel up to a basis of an original space
But i do not have an idea of how to do this correctly
