Construct a `3 xx 4` matrix, whose elements are given by:(i) `a_(i j)=1/2|-3i+j|` (ii) `a_(i j)=2i-j`

Explanation

To construct the required `3 x 4` matrices based on the given formulas, we will follow these steps:

### Part (i): Constructing the matrix with elements defined by \( a_{ij} = \frac{1}{2} |-3i + j| \)

1. **Determine the matrix dimensions**: We need a matrix with 3 rows and 4 columns.

2. **Calculate each element**:
- For \( i = 1 \):
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