討論串[理工] [線代]-rank
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首先看一個Lemma. Let A in M_mxn(F), x in F^n , y in F^m. then <Ax,y> = <x,A*y> where A* is adjoint of A. 然後利用這個Lemma再來看這個事實:. Let A in M_mxn(F) Then rank(A
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What is the relation between the rank r and the dimension of A when the. → →. number of solutions to Ax = b is (10%). →. (a) 0 or 1, depending on b..
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