Question

determine a matriz em q d=[dij] 4.2 em que dij= 3i - 2j​

Answer 1

$Temos\ que\ a\ matriz\ D_{4x2} =\ d_{ij} \ dada\ da\ seguinte\ maneira:\\\\D = \left[\begin{array}{cccc}d_{11} &d_{12}\\d_{21} &d_{22}\\d_{31&d_{32}\\d_{41}&d_{42}}\end{array}\right] \\\\Basta\ fazermos\ as\ contas\ onde\ d_{ij} = 3i - 2j, sendo\ assim,\ teremos:\\\\D = \left[\begin{array}{cccc}3.1-2.1 &3.1-2.2 \\3.2-2.1 &3.2-2.2 \\3.3-2.1 &3.3-2.2 \\3.4-2.1 &3.4-2.2 }\end{array}\right] = \left[\begin{array}{cccc}1 &-1 \\4 & 2\\7&5\\10&8 \end{array}\right]$