Please Answer the this question

B=[1 2 3;4 1 2;2 5 3]

A(new)=A(old)+A(old)* B

res=norm(Anew)

until res=100000

How many numbers of iterations are required ?

You can initiate with A=[1; 1; 1]

Thank you.

Sandip

Answer 1

[Walter Roberson]

8.

[SANDIPKUMAR ROYADHIKARI]

But sir how to code this ?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Walter Roberson]

The problem has no solution.

Your A is 3 x 1. Your B is 3 x 3. You have A*B which is (3 x 1) * (3 x 3) . But for the algebraic matrix multiplication operator * the second dimension of the first operand (A) must match the first dimension of the second operand (B), and since 1 does not match 3, the operation cannot proceed.

If you use A as a 1 x 3 vector, then after a small number of steps, the norm() is a lot past 100000. It never equals 100000 . Your B has no negatives so multiplying by B is always going to give a result larger than the original if the original is all positive, so taking further steps cannot eventually return down to the target.

Possibly there might be a solution with a different initial A.