Question

construa a matriz (a i j ) do tipo 2x3, sendo a i j = 3i -j​

Answer 1

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$\sf{a_{11}=3\cdot1-1=2}\\\sf{a_{12}=3\cdot1-2=3-2=1}\\\sf{a_{13}=3\cdot1-3=3-3=0}\\\sf{a_{21}=3\cdot2-1=6-1=5}\\\sf{a_{22}=3\cdot2-2=6-2=4}\\\sf{a_{23}=3\cdot2-3=6-3=3}$

$\rm{A}=\begin{bmatrix}\tt{2}&\tt{1}&\tt{0}&\\\tt{5}&\tt{4}&\tt{3}\end{bmatrix}$