Homework Answers
solve the linear algebra question 1. (6 points) Let S be a subspace of R3 spanned...
solve the linear algebra question
1. (6 points) Let S be a subspace of R3 spanned by the columns of the matrix [1 2 0 1 1] 2 4 1 1 0 3 6 1 2 1 Find a basis of S. What is the dimension of S?
linear algebra 3. Let A be the following matrix: A= 0 -2 6 0 0 C...
linear algebra
3. Let A be the following matrix: A= 0 -2 6 0 0 C 6 C 02 0 0 8 0 0 5 T 3 -1 7 6 2 - 4 04 (a) Find det(A). Show your work Express your answer in terms of x. (b) Identify the value(s) of x for Nul (A) = {0}.
linear algebra Let V (71, 72, 3}, where 71 73=(2,0,3). (1,3,-1), 2 = (0, 1,4), and...
linear algebra
Let V (71, 72, 3}, where 71 73=(2,0,3). (1,3,-1), 2 = (0, 1,4), and (a) Prove: V is a basis. (b) Find the coordinates of (b, b2, bs) with respect to V = {71, U2, 3,}. (c) Suppose M and M' are matrices whose columns span the same vector space V. Let b be the coordinates of relative to M. Write a matrix equation that gives b', the coordinates of relative to M'. (Your answer should be a...
Matrix Methods/Linear Algebra: Please show all work and justify the answer! 3 -6 9 0 1...
Matrix Methods/Linear Algebra: Please show all work and justify
the answer!
3 -6 9 0 1 -2 0 -6 3. Let A= 2 -4 7 2 The RREF of Aiso 0 1 2 3 -6 6 -6 0 0 0 (a) (6 points) Find a basis for Col A, the column space of A. 0 (b) (2 points) What is rank A? (c) (6 points) Find a basis for Null A, the null space of A.
These are linear algebra problems. Let 5 1 7 0 0 -3 3 A= 5 1...
These are linear algebra problems.
Let 5 1 7 0 0 -3 3 A= 5 1 0 13 5 1 2 Find M23 and C23, M23 C23= Answer *1: exact number, no tolerance Answer *2: exact number, no tolerance Evaluate the determinant of the given matrix by reducing the matrix to row-echelon form. 2 -2 -6 6 -7 0 -2 -4 4 1 0 A = 4 0 0 2 0 0 0 3 .5 det(A)
Linear Algebra Please list whether the following is True or False: (16) Let A be an...
Linear Algebra
Please list whether the following is True or
False:
(16) Let A be an m × n matrix. If each column of A has a pivot, then the columns of A can span Rn (17) (AB)T ATBT (18) The product of two diagonal matrices of the same size is a diagonal matrix (19) If AB- AC, then B- C. (20) Every matrix is row equivalent to a unique matrix in row reduced echelon form
linear algebra Problems 1. Let A= 3 3 0 5 2 2 0 -2 4 1...
linear algebra
Problems 1. Let A= 3 3 0 5 2 2 0 -2 4 1 -3 0 2 10 3 2 (a) Identify the (1,4)-minor A14 (b) Find the (3,2)-cofactor C32.
linear algebra 1 2. Let A be the 3 x 3 matrix: A= 3 3 0...
linear algebra
1 2. Let A be the 3 x 3 matrix: A= 3 3 0 -4 1-3 5 1 (a) Find det(A) by hand. (b) What can you say about the solution(s) to the linear system Az = ? A. No Solutions B. Unique Solution C. Infinitely Many Solutions (c) Is A invertible?
7. (20 points) Let 0-1 5 3 A -2 34 2 -3-5 (a) ( 15 points) Solve the linear system Ax = b by Gaus...
7. (20 points) Let 0-1 5 3 A -2 34 2 -3-5 (a) ( 15 points) Solve the linear system Ax = b by Gaussian elimination and express the general solution in vector form. (b) (5 points) Write down the corresponding homogenous system Ax-0 explicitly and determine all non-trivial solutions from (a) without resolving the system
7. (20 points) Let 0-1 5 3 A -2 34 2 -3-5 (a) ( 15 points) Solve the linear system Ax = b by...
linear algebra 1 0 0 0 1 1 0 0 1. Let A be the 4...
linear algebra
1 0 0 0 1 1 0 0 1. Let A be the 4 x 4 matrix: A= 1 1 1 0 1 1 1 1 (a) Find A-1 by hand. (b) Let T be defined by T(T) = Aē. Use your answer to (a) to find all vectors T E R4 such that: T(T) = 2 4 -9 0 (c) Which of the following statements are true? (Select all that apply) A. The columns of A form...
solve the linear algebra question
1. (6 points) Let S be a subspace of R3 spanned by the columns of the matrix [1 2 0 1 1] 2 4 1 1 0 3 6 1 2 1 Find a basis of S. What is the dimension of S?
linear algebra
3. Let A be the following matrix: A= 0 -2 6 0 0 C 6 C 02 0 0 8 0 0 5 T 3 -1 7 6 2 - 4 04 (a) Find det(A). Show your work Express your answer in terms of x. (b) Identify the value(s) of x for Nul (A) = {0}.
linear algebra
Let V (71, 72, 3}, where 71 73=(2,0,3). (1,3,-1), 2 = (0, 1,4), and (a) Prove: V is a basis. (b) Find the coordinates of (b, b2, bs) with respect to V = {71, U2, 3,}. (c) Suppose M and M' are matrices whose columns span the same vector space V. Let b be the coordinates of relative to M. Write a matrix equation that gives b', the coordinates of relative to M'. (Your answer should be a...
Matrix Methods/Linear Algebra: Please show all work and justify
the answer!
3 -6 9 0 1 -2 0 -6 3. Let A= 2 -4 7 2 The RREF of Aiso 0 1 2 3 -6 6 -6 0 0 0 (a) (6 points) Find a basis for Col A, the column space of A. 0 (b) (2 points) What is rank A? (c) (6 points) Find a basis for Null A, the null space of A.
These are linear algebra problems.
Let 5 1 7 0 0 -3 3 A= 5 1 0 13 5 1 2 Find M23 and C23, M23 C23= Answer *1: exact number, no tolerance Answer *2: exact number, no tolerance Evaluate the determinant of the given matrix by reducing the matrix to row-echelon form. 2 -2 -6 6 -7 0 -2 -4 4 1 0 A = 4 0 0 2 0 0 0 3 .5 det(A)
Linear Algebra
Please list whether the following is True or
False:
(16) Let A be an m × n matrix. If each column of A has a pivot, then the columns of A can span Rn (17) (AB)T ATBT (18) The product of two diagonal matrices of the same size is a diagonal matrix (19) If AB- AC, then B- C. (20) Every matrix is row equivalent to a unique matrix in row reduced echelon form
linear algebra
Problems 1. Let A= 3 3 0 5 2 2 0 -2 4 1 -3 0 2 10 3 2 (a) Identify the (1,4)-minor A14 (b) Find the (3,2)-cofactor C32.
linear algebra
1 2. Let A be the 3 x 3 matrix: A= 3 3 0 -4 1-3 5 1 (a) Find det(A) by hand. (b) What can you say about the solution(s) to the linear system Az = ? A. No Solutions B. Unique Solution C. Infinitely Many Solutions (c) Is A invertible?
7. (20 points) Let 0-1 5 3 A -2 34 2 -3-5 (a) ( 15 points) Solve the linear system Ax = b by Gaussian elimination and express the general solution in vector form. (b) (5 points) Write down the corresponding homogenous system Ax-0 explicitly and determine all non-trivial solutions from (a) without resolving the system
7. (20 points) Let 0-1 5 3 A -2 34 2 -3-5 (a) ( 15 points) Solve the linear system Ax = b by...
linear algebra
1 0 0 0 1 1 0 0 1. Let A be the 4 x 4 matrix: A= 1 1 1 0 1 1 1 1 (a) Find A-1 by hand. (b) Let T be defined by T(T) = Aē. Use your answer to (a) to find all vectors T E R4 such that: T(T) = 2 4 -9 0 (c) Which of the following statements are true? (Select all that apply) A. The columns of A form...
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