How do I solve for H in matlab?

[Badger33]

I need help implementing this bit of code into matlab. I have a known matrix lest call it Z. and I have another unknown matrix called H. The matrices are related by the following relationship.

Z = H^TH

How do I solve for H in matlab? If it is relevant Z is a make up of other known matrices and that code in MATLAB is:

Z = A + 2*eye(n)

where A is the initial known matrix and n is just an integer.UPDATE: Yes A and Z will always be positive.

 

[Office_Shredder]

As an initial observation Z has to be symmetric and positive definite to do this, which puts restrictions on A. Assuming that this is true,

http://www.mathworks.com/help/matlab/ref/chol.html

is what you're looking for. This returns a matrix H that has the property you want and also is lower diagonal

 

[Badger33]

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