Q 2 (c) Let S be the set of matrices of the form A = a, a T ag arbitrosy where are real numbers. Show there exists a unique matrix E in s such that АЕА o in S. for all Marks ((1+3+37 +(2+3 + 8) = 20 Marks) MATH 2118 Online Class Exercise I Qla) Sketch the surface s defined by the equation z = =9-6tty! (6) Determine the equation of the tongent plane to the surface s given...
O Q 2 (C) Let S be the set of matrices of the form A= a az ag where a ja, are arbitrary real numbers. Show there exists a unique matrix such that A EA for all A in S.
A) 2 For cos 23 -sino cos For sino any matrix A = any € [0, 21] let [a b] simplify simplify Ax. B) If A = B) and c Coff 8 , find 2 A- [12], B =[2] A (x +B) =(. such that
Problem 5. Let n N. The goal of this problem is to show that if two real n x n matrices are similar over C, then they are also similar over IK (a) Prove that for all X, y є Rnxn, the function f(t) det (X + ty) is a polynomial in t. (b) Prove that if X and Y are real n × n matrices such that X + ừ is an invertible complex matrix, then there exists a...
L. Answer True or False. Justify your answer (a) Every linear system consisting of 2 equations in 3 unknowns has infinitely many solutions (b) If A. B are n × n nonsingular matrices and AB BA, then (e) If A is an n x n matrix, with ( +A) I-A, then A O (d) If A, B two 2 x 2 symmetric matrices, then AB is also symmetric. (e) If A. B are any square matrices, then (A+ B)(A-B)-A2-B2 2....
a) Let I be the n x n identity matrix and let O be the n × n zero matrix . Suppose A is an n × n matrix such that A3 = 0. Show that I + A is invertible and that (I + A)-1 = I – A+ A2. b) Let B and C be n x n matrices. Assume that the product BC is invertible. Show that B and C are both invertible.
Problem 2. For each polynomial p(t) = do +at+...+ amtm with real number coefficients and for each n x n matrix A, we define the n x n matrix p(A) by P(A) = ao In + a A+ ... + amA”. Also, for each n, let Onxn E Rnxn be the n x n zero matrix. (a) Show that for all polynomials p and q and square matrices A, we have p(A)q(A) = 9(A)p(A). (b) Show that for every 2...
#21. Let G be the set of all real 2 x 2 matrices where ad + 0, Prove that under matrix multiplication. Let N = (a) N is a normal subgroup of G. (b) G/N is abelian.
oru 2 Let A and B be two n x n matrices. There exists a nonsingular matrix P such that PB = AP. Then which of the following is always true? a) A and B are not similar b) A and B have the same eigenvalues c) A does not have any characteristic polynomial d) B does not have any characteristic polynomial
Consider the following matrices 2. .6 6 .9 A2 Ag (a) Diagonalize each matrix by writing A SAS-1 (b) For each of these three matrices, compute the limit Ak-SNS-1 as k-+ 00 if it exists. (c) Suppose A is an n x n matrix that is diagonalizable (so it has n linearly independent eigenvectors). What must be true for the limit Ak to exist as k → oo? What is needed for Ak-+ O? Justify your answer.