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Exercise 2 Consider the symmetric matrix A a13 23 012 a13 023 , the quadratic form...
4. (a) Find the symmetric matrix A associated with the quadratic form, q = 5x - 4.1112+5x3, and compute the eigenvalues X, and 12 and the associated normalized eigenvectors e, and e2 of A. (b) Use the result of Part (a) to determine the spectral decomposition for A PAP. 22), and y. . wal. Rewrite q = (c) Let x = Py, where P is in Part (b), x = ( 5x - 4x32 +503 in y-variables, yı and y2.
5.3.15 Consider the quadratic form tx In (5.3.21) 1) Find a symmetric matrix A E R(n, n) such that q(x)-x' Ax for (ii) Compute the eigenvalues of A to determine whether q or A is pos- r E R" itive definite,
Find the symmetric matrix A associated with the given quadratic form 2x2-3y2+z2 - 4xz A=
Find the symmetric matrix A associated with the given quadratic form 2x2-3y2+z2 - 4xz A=
Consider the quadratic form Q(x) xỈ + x2 + x + 4X1X2 + 4x2x3 + 4x3x1. (a) Find the real symmetric matrix A so that Q(X) = XTAX. (b) Find an orthogonal matrix Q so that the change of variables x = Qy transforms the quadratic for Q(x) into one with no cross-product terms, that is, diagonalize the quadratic form (x). Give the transformed quadratic form. (c) Find a vector x of length 1 at which Q(x) is maximized. (d)...
9. Find the symmetric matrix A associated with the given quadratic form. A. x +223 +63122 B. 2x2 – 3y2 + x2 - 4x2
Theorem. Consider the quadratic form Q(x) = Ar where A is anxn symmetric matrix and A, and denote the largest and smallest eigenvalues of A, respectively. Then max Q(x) = 2 = max Q() = 1 and Q0.) = 1, where is any unit eige vector corre sponding to ii) in (r) and QU.) where is any unit eigen vector corresponding to do 1. - Find max Q(x) and min Q(x). 1) Q(1) = 3x + 43273 +673 ii) Q(z)...
I Consider the non-symmetric matrix (2) Show that a, = -1, 2, =23 (6) Find a generalized eigerrector is such that y1, K2, V3 - are linearly is dependent. (c) Write A in its Canonical Jordan Form.
Consider the quadratic form Q - 2u24u,u2 5u22 + 2uzu32u,u 8. Write the quadratic form with the help of a matrix, in the form XAX 9. Examine whether the "definitness" of this quadratic form 10. BONUS (1 point). Calculate the eigenvalues of the discriminant and use them to check your answer to question 9
Consider the quadratic form Q - 2u24u,u2 5u22 + 2uzu32u,u 8. Write the quadratic form with the help of a matrix, in the form XAX 9....
1. (10 points) Consider quadratic form q ) = ? Aš where: 1 0 C A= -2 3 -2 T=Y -3 -4 -5 ܠܛ 2 (a) Find a symmetric matrix Q such that q(7) = 2 Q7. (b) Determine whether the quadratic form q is positive definite, positive semidefinite, negative definite, negative semidefinite, or indefinite.
Consider the quadratic form Q(1, 2, r)2r2r34rs. Write Q(, 2, 3) in the fornm Q(1, 2, z3)xAx for some matrix A to be found, where x-2 T3 Classify Q(x1, r2, r3) as positive definite, negative definite, positive semidefinite, negative semidefinite, or indefinite