Construct a `3xx2` matrix whose elements are given by `a_(ij)=e^(i.x)-sinjx`.

Explanation

To construct a \(3 \times 2\) matrix whose elements are defined by \(a_{ij} = e^{ix} - \sin(jx)\), we will follow these steps:

### Step 1: Understand the Matrix Structure
A \(3 \times 2\) matrix has 3 rows and 2 columns. The elements of the matrix can be represented as follows:
\[
\begin{bmatrix}
a_{11} & a_{12} \\
a_{21} & a_{22} \\
...