QR Factorization of a 10 x 10 Matrix

I need to Solve a 10 x 10 Matrix using QR factorization. please Write a MATLAB program for calculating the QR factorization of any 10 × 10 matrix.

Answer 1

[Jan]

X      = rand(10, 10);
[Q, R] = qr(X);

[Walter Roberson]

But, Jan, it has to work for *any* 10 x 10 matrix. The code you show would not work for a 10 x 10 matrix of objects, for example.

[Jan]

@Walter: It does _work_ for objects! Matlab displays a clear and expressive error message when I try it. And after I've requested a copy of the error message in this forum so often, I accept the display of the message as _work_.

[Walter Roberson]

Does it "solve" char(eye(10)) ?

[Jan]

Yes. As usual in mathematics, the canny addition of a zero allows a solution:

[Q, R] = qr(char(eye(10)) + 0)