(4) Given a matrix X of independent variables, psudo-inverse X† is defined as (X"X)-'x" (a) If X is an n x (m + 1) matrix and Y is an n x 1 matrix. What is the dimension of XtY? (b) Prove that xtx = 1.
(4) Given a matrix X of independent variables, psudo-inverse X† is defined as (X"X)-'x" (a) If X is an n x (m + 1) matrix and Y is an n x 1 matrix. What is the dimension of XtY? (b) Prove that xtx = 1.
Chapter7: Systems Of Equations And Inequalities
Section7.8: Solving Systems With Cramer's Rule
Problem 3SE: Explain what it means in terms of an inverse for a matrix to have a 0 determinant.
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