Question

Construct a 2x2 matrix whose element are given by i+j​

Answer 1

9514 1404 393

Answer:

see below

Explanation:

Assuming i and j refer to the row and column of a given element, that matrix would be ...

`\left[\begin{array}{cc}2&3\\3&4\end{array}\right]`

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Rows are numbered top down, starting with 1. Columns are numbered left-to-right, starting with 1. The upper left element is in row 1, column 1, so has a value here of 1+1 = 2. Each number is one more than the one to its left. Each number is 1 more than the one above it.