differentiation with matrices/vectors

by mikeph
Tags: differentiation, matrices or vectors
mikeph is online now
Mar5-13, 08:57 AM
P: 1,205

I'm trying to understand this proof:


Can someone quickly talk me through the differentiation step, bearing in mind I've never learn how to differentiate with respect to a vector?

Most confusing for me is:

1. why are they differentiating with respect to the transpose b' rather than just b?
2. where does the -2X'y term come from?
3. is there any assumption here that X is square?

Thanks for any help,
Phys.Org News Partner Mathematics news on Phys.org
Math modeling handbook now available
Hyperbolic homogeneous polynomials, oh my!
Researchers help Boston Marathon organizers plan for 2014 race

Register to reply

Related Discussions
Vectors differentiation formulas for Dot and Box Product! how? Calculus 5
differentiation with vectors Calculus 8
vectors and differentiation Calculus & Beyond Homework 12
Putting vectors into matrices Calculus & Beyond Homework 1
Vectors and Matrices Precalculus Mathematics Homework 1