An n × n symmetric banded coefficient matrix with m sub diagonals and m super diagonals...

An n × n symmetric banded coefficient matrix with m sub diagonals and m super diagonals can be stored in symmetric banded storage mode in an n × (m + 1) array. Only the main diagonal and sub diagonals are stored so that the main diagonal is the last column in the new array. Write and test a procedure for solving a linear system with the coefficient matrix stored in symmetric banded storage mode.