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

Show that Ax=bhas a solution if and only ifbis in CS(A).

2. Relevant equations

3. The attempt at a solution

Ax=b

b [tex]\in[/tex] CS(A) means

d1A1 + d2A2+ .........+ dnAn = b

and I am lost

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# Solution of a Ax=b exists iff b is in CS (A) ?

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