Question

Write the element a₂₃ of a 3 ✕ 3 matrix A = (a_ij) whose elements a_ij are given by `a_(ij)=∣(i−j)/2∣`

Answer 1

Given:

`a_(ij)=∣(i−j)/2∣`

`∴ a_23=∣(2−3)/2∣=∣−1∣/2=1/2`