In each case below determine whether the set w is a

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4.In each case below, determine whether the setWis a subspace ofM2×2(R) (the vectorspace of 2×2 matrices). Justify your answers.(i)W={abcdM2×2(R)|ad-bc= 0}.(ii)W={AM2×2(R)|A=AT}.
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[10]5.LetSbe the subset ofM2×2(R) (the vector space of 2×2 matrices) given byS={21-21,0-3-21,cc+ 200}Find all values ofcfor whichSlinearlydependent.

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