
4. Express the quadratic form f(x. x3, xz) = x2 – 2x, x2 + 5x/X3 –...
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)...
5. Use Scilab to create following rational expression matrix: 12x 2 1+x 1x2 1 x2 1 +x 3 x 1+x3x3 5x x3 2 x2 1 x3 6 1+2x 1+ 3х + x2 1-х+x2.
5. Use Scilab to create following rational expression matrix: 12x 2 1+x 1x2 1 x2 1 +x 3 x 1+x3x3 5x x3 2 x2 1 x3 6 1+2x 1+ 3х + x2 1-х+x2.
1. (20 pts.) Consider the following linear program: max 4x4 +xz+5x3 +3x4 s.t. *1 -X2 -X3 +3X, 51 5x +xz+3X3 +8X555 -X2 +2x2+3x3 -5x53 It is claimed that the solution x* = (0,14,0,5) is an optimal solution to the problem. Give a proof of the claim. Do not use the simplex method to solve this problem.
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.
(2) Express the quadratic form Q=x; -x} - 4x,x2 + 4xzxz in terms of diagonal quadtratic form.Use X(X1, X2, X3)=PY(y1,92,93) 121 Tannster.T.D-D alhym2) - (2. Ihim
d) Given the primal problem Max z= 8x/+3x2+xz Subject to: x;+6x,+8x3<118 X, + 5x+10x<240 X1, X2,X3, 20 Write down its problem (5 marks) dual Question Nine R=622 R4 2 02. V-24V R = 422. R5=2.522. (a) What are the voltage across and the current in each of the resistors Ri through Rs in figure above? (6 Marks) (b) How much power is dissipated in R.? (4 marks)
Question 11 Find the derivative: f(x) = x2 In 5x 2x (3x In 5x) X+ In 10x **Previous
I need to graph this
Consider the quadratic f (x) = x2 – 2x – 8.
XTAX=1. determine their canon- 1. Write the following quadratic forms as V(x) ical forms, find the modal matrices (i.e. the matrices of unit eigenvectors) of the corresponding transformations and write down explicite expressions for canonical cOordinates (y1, 2, y3) in terms of the original coordinates (x1, X2, X3). State what surfaces these quadratic forms correspond to = > (a) x + 4x1r2 + 4a13-8a2x3 = 1; (b) a3a3a^ + 4xj2 +4x131223 1; (c) 4a7 2a2 2axjx2 2x13+ 6x23 = 1....
10) Determine whether the matrix operator is invertible, if so, find its inverse. a)T(x, y) = (3x + 4y, 5x + 7y) b)T(x1, X2 X3) = (x; + 2x2 + 3x3, xz – X3, X; +3x2 + 2x3)