Homework Answers
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Exercise 20 Let fr,y} be an orthonormal basis of a two-dimensional subspace S of R" and...
Exercise 20 Let fr,y} be an orthonormal basis of a two-dimensional subspace S of R" and T A= xx SL (i) Show that N(A (ii) Show that the rank of A is 2 (iii Show that x and y are eigenvectors of A for an eigenvalue X of A. What is A?
Exercise 20 Let fr,y} be an orthonormal basis of a two-dimensional subspace S of R" and T A= xx SL (i) Show that N(A (ii) Show that the...
Exercise 25. Let , be an orthonormal basis of a two-dimensional subspace S of R" and...
Exercise 25. Let , be an orthonormal basis of a two-dimensional subspace S of R" and A xyT + (i) Show that x+y and x -y are eigenvectors of A. What are their corresponding eigenvalues? (ii) Show that 0 is an eigenvalue of R" with n - 2 linearly independent eigenvectors. (iii) Explain why A is diagonalizable.
Exercise 25. Let , be an orthonormal basis of a two-dimensional subspace S of R" and A xyT + (i) Show that x+y...
[B] Let W be the subspace of M22 given in problem [A] . (B.1) Show that...
[B] Let W be the subspace of M22 given in problem [A] . (B.1) Show that the following set forms a basis for W: S = -5 (B.2) Obtain the coordinate vector for A = 3 relative to S. That is, find (A)s. -8 Show work!
[B] Let W be the subspace of M22 given in problem [A] . (B.1) Show that the following set forms a basis for W: S = -5 (B.2) Obtain the coordinate vector for A...
Show that U = {A E Mnxn(R) : trace(A) = 0} is a subspace of Mnxn(R)....
Show that U = {A E Mnxn(R) : trace(A) = 0} is a subspace of Mnxn(R). Let n E N and A e Mnxn(R). Define trace(A) = x1=1 di,i (i. e. the sum of the diagonal entries) and tr : Mnxn(R) + R, A trace(A).
Problem 1: Let 0 z E R". Show that the set (r) " {oz | α...
Problem 1: Let 0 z E R". Show that the set (r) " {oz | α E R} is a clloed subspace of R" and show that the projection onto ()is given by P by solving the appropriate minimum problem.
Problem 6. (20 pts.) Let R = R\{0, 1,2) = {r€R ]r#0,1,2} be the set of...
Problem 6. (20 pts.) Let R = R\{0, 1,2) = {r€R ]r#0,1,2} be the set of all real numbers except 0,1,2. Let G be a subgroup of the group of bijective functions Describe all elements of G and construct the Cayley diagram for G. What familiar group is G isomorphic to (construct the isomorphism erplicitly)? R, PR, generated by f(r) 2-r and g(z) 2/ . on
Problem 6. (20 pts.) Let R = R\{0, 1,2) = {r€R ]r#0,1,2} be the...
(10) Let ū ER. Show that M = {ū= | ER*:ūū= 0) is a subspace of...
(10) Let ū ER. Show that M = {ū= | ER*:ūū= 0) is a subspace of R'. Definition: (Modified from our book from page 204.) Let V be a subspace of R". Then the set of vectors (61, 72, ..., 5x} is a basis for V if the following two conditions hold. (a) span{61, 62,...,x} = V (b) {61, 62, ..., 5x} is linearly independent. Definition: Standard Basis for R" The the set of vectors {ēi, 72, ..., en) is...
Let R be a ring, let S be a subring of R and let' be an...
Let R be a ring, let S be a subring of R and let' be an ideal of R. Note that I have proved that (5+1)/1 = {5 +1 | 5 € S) and I defined $:(5+1) ► S(SO ) by the formula: 0/5 + 1)=5+(SNI). In the previous video I showed that was well-defined. Now show that is a ring homomorphism. In other words, show that preserves both ring addition and ring multiplication. Then turn your work into this...
Let w be a subspace of R", and let wt be the set of all vectors...
Let w be a subspace of R", and let wt be the set of all vectors orthogonal to W. Show that wt is a subspace of R" using the following steps. a. Take z in wt, and let u represent any element of W. Then zu u = 0. Take any scalar c and show that cz is orthogonal to u. (Since u was an arbitrary element of W, this will show that cz is in wt.) b. Take z,...
Problem 5 Let W-(a an z Show that W is a subspace of R. + za}...
Problem 5 Let W-(a an z Show that W is a subspace of R. + za} e R4 | a5= 22 - Determine a bansis for W, and find its dimension (asa vector space over R)
Exercise 20 Let fr,y} be an orthonormal basis of a two-dimensional subspace S of R" and T A= xx SL (i) Show that N(A (ii) Show that the rank of A is 2 (iii Show that x and y are eigenvectors of A for an eigenvalue X of A. What is A?
Exercise 20 Let fr,y} be an orthonormal basis of a two-dimensional subspace S of R" and T A= xx SL (i) Show that N(A (ii) Show that the...
Exercise 25. Let , be an orthonormal basis of a two-dimensional subspace S of R" and A xyT + (i) Show that x+y and x -y are eigenvectors of A. What are their corresponding eigenvalues? (ii) Show that 0 is an eigenvalue of R" with n - 2 linearly independent eigenvectors. (iii) Explain why A is diagonalizable.
Exercise 25. Let , be an orthonormal basis of a two-dimensional subspace S of R" and A xyT + (i) Show that x+y...
[B] Let W be the subspace of M22 given in problem [A] . (B.1) Show that the following set forms a basis for W: S = -5 (B.2) Obtain the coordinate vector for A = 3 relative to S. That is, find (A)s. -8 Show work!
[B] Let W be the subspace of M22 given in problem [A] . (B.1) Show that the following set forms a basis for W: S = -5 (B.2) Obtain the coordinate vector for A...
Show that U = {A E Mnxn(R) : trace(A) = 0} is a subspace of Mnxn(R). Let n E N and A e Mnxn(R). Define trace(A) = x1=1 di,i (i. e. the sum of the diagonal entries) and tr : Mnxn(R) + R, A trace(A).
Problem 1: Let 0 z E R". Show that the set (r) " {oz | α E R} is a clloed subspace of R" and show that the projection onto ()is given by P by solving the appropriate minimum problem.
Problem 6. (20 pts.) Let R = R\{0, 1,2) = {r€R ]r#0,1,2} be the set of all real numbers except 0,1,2. Let G be a subgroup of the group of bijective functions Describe all elements of G and construct the Cayley diagram for G. What familiar group is G isomorphic to (construct the isomorphism erplicitly)? R, PR, generated by f(r) 2-r and g(z) 2/ . on
Problem 6. (20 pts.) Let R = R\{0, 1,2) = {r€R ]r#0,1,2} be the...
(10) Let ū ER. Show that M = {ū= | ER*:ūū= 0) is a subspace of R'. Definition: (Modified from our book from page 204.) Let V be a subspace of R". Then the set of vectors (61, 72, ..., 5x} is a basis for V if the following two conditions hold. (a) span{61, 62,...,x} = V (b) {61, 62, ..., 5x} is linearly independent. Definition: Standard Basis for R" The the set of vectors {ēi, 72, ..., en) is...
Let R be a ring, let S be a subring of R and let' be an ideal of R. Note that I have proved that (5+1)/1 = {5 +1 | 5 € S) and I defined $:(5+1) ► S(SO ) by the formula: 0/5 + 1)=5+(SNI). In the previous video I showed that was well-defined. Now show that is a ring homomorphism. In other words, show that preserves both ring addition and ring multiplication. Then turn your work into this...
Let w be a subspace of R", and let wt be the set of all vectors orthogonal to W. Show that wt is a subspace of R" using the following steps. a. Take z in wt, and let u represent any element of W. Then zu u = 0. Take any scalar c and show that cz is orthogonal to u. (Since u was an arbitrary element of W, this will show that cz is in wt.) b. Take z,...
Problem 5 Let W-(a an z Show that W is a subspace of R. + za} e R4 | a5= 22 - Determine a bansis for W, and find its dimension (asa vector space over R)
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