Construct a $3 \times 4$ matrix,whose elements are given by $a_{i j}=\frac{1}{2}|-3 i+j|$.

  • A
    $A=\begin{bmatrix} 1 & \frac{1}{2} & 0 & \frac{1}{2} \\ \frac{5}{2} & 2 & \frac{3}{2} & 1 \\ 4 & \frac{7}{2} & 3 & \frac{5}{2} \end{bmatrix}$
  • B
    $A=\begin{bmatrix} 1 & \frac{3}{2} & 0 & \frac{1}{2} \\ \frac{5}{2} & 2 & \frac{3}{2} & 1 \\ 4 & \frac{7}{2} & 3 & \frac{3}{2} \end{bmatrix}$
  • C
    $A=\begin{bmatrix} 1 & \frac{1}{2} & 0 & \frac{1}{2} \\ \frac{7}{2} & 2 & \frac{3}{2} & 1 \\ 4 & \frac{-7}{2} & 3 & \frac{5}{2} \end{bmatrix}$
  • D
    $A=\begin{bmatrix} 1 & \frac{-1}{2} & 0 & \frac{1}{2} \\ \frac{5}{2} & 2 & \frac{3}{2} & 1 \\ 4 & \frac{7}{2} & -3 & \frac{5}{2} \end{bmatrix}$

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