A matrix A € Rmxn can also be viewed as a vector, by stacking all its n columns into a single length-mn column. Let x € Rm, y € R" be two column vectors. Show that (xy, A) = x¹ Ay.

Q: Exercise 2 ow that a>0, R₁ ra low

A: Remember  ∀ x∈ℝ, x<a ⇒ -a<x<a

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A: If two sets   A= {(a,b) ; a,b ∈Z}  and  B={(x,y) ; x,y ∈Z }  then               A+B ={ (a+x, b+y) ;…

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