Which are the result of taking the odds and even rows from respectively. Finally

Question

Which are the result of taking the odds and even rows from respectively. Finally, computes matrix B which is the result of squaring each element of and adding each element of matrix N. For example, if: A = [1 2 3 4 5 3 7 8 9 10 11 12], then M = [1 2 3 7 8 9], N = [4 5 6 10 11 12], thus B = [1^2 + 4 7^2 + 10 2^2 + 5 8^2 + 11 3^2 + 6 9^2 +12] = [5 9 15 59 75 93], Below, was the code that one husky student made. However, he made five terrible mistake Prove that you can beat that husky by identifying his mistakes and fixing them.

Explanation / Answer

Code for this program will be

clear all
close all
clc

A=input('Enter Matrix A ');
disp(A);
[R,C]=size(A)

M=A(1:2:R,:);
N=A(2:2:R,:);
B=M.*M+N;
disp('The Matrix B is :');
disp(B);

you have to give input as

[1,2,3;4,5,6;7,8,9;10,11,12]

for N,you used A(;,1:2:C) you should use A(2:2:R,:)

And Multiplication should be M.*M+N; (we need elements multiplication so,you should use ".", here M^2 ives matrix multiplication which is not possible since it is not a square matrix and even if it was square matrix it wouyld have given different results)  

Other than that everything is fine.

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