
Calculus Calculus Math Forum 
 LinkBack  Thread Tools  Display Modes 
April 6th, 2015, 12:04 PM  #1 
Newbie Joined: Apr 2015 From: Iran Posts: 2 Thanks: 0  Derivative of norm of a Gram matrix's diagonal
I have a matrix X of size mbyn. I need to calculate derivative of the following function of X with respect to X: $\displaystyle f(X)=diag(X^TX)_2^2$ where $\displaystyle diag()$ returns diagonal elements of a matrix into a vector. How can I calculate $\displaystyle \frac {\partial f(X)} {\partial X}$? Please help me. Thanks in advance! 

Tags 
derivative, diagonal, gram, matrix, norm 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
ultra diagonal matrix, super diagonal matrix, sub diagonal matrix  silviatodorof  Linear Algebra  2  March 22nd, 2015 06:28 AM 
Gram matrix  hoody  Linear Algebra  0  May 11th, 2013 09:33 AM 
determinant of gram matrix  cummings123  Linear Algebra  0  November 21st, 2012 01:46 PM 