Urgent Help with Iterating Vectors on MATLAB

Hi

I've been trying to carry out the following procedure:

a) Set vector v to be the vector [1 ; 0]

b) Find a new vector u = Av (where A is a generalised 2 x 2 real matrix)

c) Find the magnitude of this new vector u, and call this magnitude c

d) Divide u by c (i.e. to make it into a unit vector)

e) Set v to be this unit vector, then repeat steps b) to e) a numnber of times

So far I have tried inputting this:

v(1) = [1 ; 0]

for n = 1:100

    u(n) = A*v(n+1)

    c(n) = norm(u(n))

    v(n+1) = u(n)/c(n)

end

but to no avail! I don't know what to do! Help please?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Sean de Wolski]

well first off,

v(1) = [1; 0];

This attempts to stick two elements (a 1 and a 0) into one spot (v(1)). So this won't work.