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Code Listing by Janardhanan Sivaramakrishnan

Code 1-6 of 6   






SUDOKU_LVL2 - A Sudoku Solver.

Usage : Sol=sudoku_lvl2(A)
Where A is a incomplete sudoku grid (9 x 9) represented as a 9 x 9 matrix of integers (0-9) with the empty cells being filled with zeros.

The algorithm presented here uses the following techniques.
(*) Filling a cell by candidate elimination
(*) Filling a cell by position exclusion for a given candidate
(*) Refining choices of candidates in a...



This function computes the frobenius transformation T for a multi-input state representation (A,B) such that the transformed system (T*A*inv(T),T*B) is in the multi-input controllable canonical form.

Refer : D. G. Luenberger,...



The script plots the envelope of the bode plot for a parametric uncertain/interval system.

interval_bode(NumVec,DenVec,clr)

The function accepts the numerator (NumVec) and denominator (DenVec) of the uncertain system as...



% This Function solves a bilateral matrix quadratic equation
% of the form AX+XB+XCX+D = 0 for X
% Inputs : Matrices A,B,C, D of appropriate dimensions
%
% Output : The Matrix X - if a solution exists



Two scripts are included here.
1. convsys.m - combines the state space representation of two systems connected in series.

[Ao,Bo,Co,Do]=convsys(A1,B1,C1,D1,A2,B2,C2,D2)

This algorithm gives the convolution of two state...



This script performs convolution of multiple polynomials and gives a final result.

Eg : multiconv([1 2],[1 2],[1 2])
= [1 6 12 8]