Let x = (r1.12) E R? and y = (y.2) E R². i) Find a symmetric matrix A e M2.2(R) such that x" Ax = 1 + 4ry + y*. %3D i) Find a diagonal matrix De M22(R) and a rotation matrix QE M22(R) such that x Ax = y" Dy, where y = Q"x. 5) Explain why the equation x' Ax = 1 is an equation of a hyperbola.
Let x = (r1.12) E R? and y = (y.2) E R². i) Find a symmetric matrix A e M2.2(R) such that x" Ax = 1 + 4ry + y*. %3D i) Find a diagonal matrix De M22(R) and a rotation matrix QE M22(R) such that x Ax = y" Dy, where y = Q"x. 5) Explain why the equation x' Ax = 1 is an equation of a hyperbola.
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.4: Orthogonal Diagonalization Of Symmetric Matrices
Problem 27EQ
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