Let A be an m×n matrix. Explain why the followingare true. Any vector x in Rn can be uniquely written as a sumy + z, where y ∈ N(A) and z ∈ R(AT ).

Q: If C is a real square matrix, then C² + I (I is the identity matrix ) is non-singular. - The vector…

A: Find the dimensions of U and V.  Then use the result if two vector spaces have same dimension then…

Q: Let A and B be 2x2 matrices such that B is invertible If detA)2 and det)-, then detA'e) Select one:…

A:

Q: Let A be an m × n matrix. Show that if x ∈ N(ATA), then Ax is in both R(A) and N(AT ).

A:

Q: For A a square matrix such that ATA = I show that det A = ±1.   If A is square and A5 = 0 show…

A: Given, ATA=IdetATA=detIdetATdetA=1  Since, detI=1detA·detA=1    Since, detAT=AdetA2=1detA=±1 This…

Q: If A and B are n X n matrices, prove the following properties of the trace: (a) tr(A + B) = tr(A) +…

A: Let A=[aij] and B=[bij] be n X n matrices. Let C=A+B and D=kA where C=[cij] and D=[dij] are n X n…

Q: Let A and B be m × n matrices that are row equivalent. (a) Prove that rank  A = rank B . (b) Prove…

A: Given :  A and B are m×n matrices with row equivalentNull Space:…

Q: Let U = {u1, u2} and W = {w1, W2} be bases for V, and let P be a matrix whose columns are u1 w and…

A:

Q: Prove the distributive property of matrix multiplication over vector sums for a given matrix A E…

A:

Q: b. a Let A = If (x, y) = y" Ax defines an inner product on R? for all æ, y E R² , show that a + c >…

A:

Q: Let A and B be n × n matrices and let x be a vector in Rn. How many scalar additions and…

A:

Q: Prove the given theorem: For any square matrix A with real number entries, A + A′ is a…

A: Given: Prove that for any square matrix A with real number entries, A + A′ is a symmetricmatrix and…

Q: Let x and a be vectors in R2 Define the L: R2→ R2 by L(x) = x +a Is this function a linear operator?…

A: Linear operator should satisfy L:Rn→Rn  a) Lu+v=Lu+Lv         u,v∈Rn b)Lcu)=cL(u

Q: Let x and y be distinct vectors in Rn (i.e., x = y), and let A be an n × n matrix with the property…

A:

Q: Let A be an (n x n) matrix and za column vector. If AA = I then Ax|| = ||r||. %3D %3D O True O False

A:

Q: Let A and B be square matrices of order n satisfying Ax = Bx for all x in Rn. (a) Find the rank and…

A:

Q: Given two skew-Hermitian matrices X and Y , prove XY −Y X is a skew-Hermitian.

A: Solution :- skew hermitian matrix:- When the conjugate transpose of a complex square matrix is equal…

Q: Let C ∈Mm×n(R), and let Y be an n ×p matrix of differentiable functions. Prove (CY )’ = CY’, where…

A:

Q: How many rows and columns must a matrix A have in order to define a mapping from R* into R³ by the…

A: Find the number of Rows and columns in a matrix A.

Q: Let A be an m x n matrix such that A"A is invertible. Show that the columns of A are linearly…

A:

Q: Prove that B is row equivalent to A if and only if there exists a nonsingular matrix M such that B =…

A:

Q: Prove that for any matrix A ∈ Mm×n(F), (R(LA∗))⊥= N(LA).

A: The objective is to prove that

Q: Let A be an m × n matrix. Prove that if the reduced echelon form of A possesses precisely one pivot,…

A: Given that A be an m×n matrix. Suppose that reduced echelon form of A possesses precisely one pivot.…

Q: b) Prove: Let A be an m x n matrix, R" = NS(A) + RS(A). %3D

A: A be an m×n matrix, we have to prove that ℝn=NSA⊕RSA  …1.

Q: Let A be an nxn matrix. If A-= det A adj A is computed, what should AA be equal to in order to…

A: Using the given matrix equation we need to find the value of AA-1 .

Q: Let A be an Hermitian matrix and let B = iA. Show that B is skew Hermitian.

A:

Q: Given u = [1 0 1] and v = [1 1 1]T (v is column matrix), evaluate the Boolean product u ʘ v

A: Given u = [1 0 1] and v = [1 1 1]T (v is column matrix), evaluate the Boolean product u ʘ v

Q: Find conditions on w, x, y, and z such that AB = BA for the matrices below.

A: Here we find the condition w,x,y,z such that AB=BA where A=wxyz , B=11-11

Q: Let A be the 2 x 3 matrix with entries aij = (i – 1)(j+ 1). Which of the following is the matrix A?

A: A be a 2×3 matrix. This means A2×3 . entries of matrix A are ai,j=(i-1)(j+1)

Q: Let A and B be matrices of size p × m and n × q , respectively. Assume that mn = pq . Define R: Mmn…

A: Matrix A is p×m and B is n×q In a m×n matrix number of element will be m.n R is defined as,…

Q: Let f(u) = u™ Au, where u e Rd and A e Rd×d is a symmetric matrix. Calculate Vuf(u).

A: Directional derivative: If the function f is differentiable at x, then the directional derivative…

Q: Let A be an m×n matrix, X an n×r matrix, and B an m × r matrix. Show that AX = B if and only if Axj…

A:

Q: Let A be an x frove that mxh matrix

A: Given A be the m×n matrix. So A* be the transpose of A.

Q: For a nonsingular matrix A and nonzero scalar k, show that (k A)−1 = 1 k A−1.

A: Given that A is nonsingular matrix. That is, A≠0. Since k is a non zero scalar, kA≠0. Therefore, kA…

Q: (a) Let M be a square matrix such that M² = 0. Let t, c be scalars and c‡0. Show that

A: We shall solve first question only as you have asked more than one different question - for others…

Q: Let A E Mn(C) denote the n x n matrix with all entries equal to 1. Show that A is positive…

A: Let A belongs to  Mn (C) denote the n x n matrix with all entries equal to 1. Show that A is…

Q: Show that if A is an n x n symmetric matrix, then |(Ax)•y = x•(Ay) for all x, y in R".

A: In symmetric matrix, transpose of the matrix is equal to the matrix. AT=A

Q: Let A be a 2 × 2 matrix, and let LA be the linear operator defined by LA(x) = Ax Show that (a) LA…

A: Both parts can be established by direct calculations for 2x2 case. The same results are true in nxn…

Q: Let A € RPXm have rank r. Show that there are matrices C and B such that A = CB, where C e RPxr and…

A:

Q: Suppose A is a 2 x 2 matrix such that for all x, y E R², (Ax) · (Ay) = x ·y Must it be true that A…

A: Please comment if you need any clarification. If you find my answer useful please put thumbs up.…

Q: Let A be an m x n matrix. Is the set K defined below convex ? Why or why not ? K = {y € R" : 3r E R"…

A:

Q: Let T:R → R be define by T(x, y) = (x+2y,-3x+5y). a) Find the standard matrix for T.

A: Given: For (a), Now, T(1, 0) = (1+2(0), -3(1)+5(0)) = (1, -3). And T(0, 1) = (0+2(1), -3(0)+5(1)) =…

Q: If u is a nonzero vector in R", then uu is a rank one matrix. O True O False

A: We have given u is a non-zero vector in ℝn. Then, u=a1a2..an where, at least one  ai≠0 and 1≤i≤n.…

Q: let  A and  B be  square  matrices of order n  such that  Ax=Bx  and x belongs to Rn  then   find…

A: Ax = Bx implies  Ax - Bx = O So, (A - B)x = O where x belongs to Rn  So, x belongs to the null space…

Q: Prove the following statement: If the columns of A are linearly independent, then AT A is…

A: A is invertible if there exists a matrix A-1 such that AA -1=A -1A=I   The vectors v1,.......,vn are…

Q: Let A = [a;;] be the n x n matrix defined by aji = k and a;; = 0 if i + j. Show that if B is any n x…

A: Given: A=aijn×n,     aii=k and aij=0 if i≠k. Let B be a square matrix of order 3 which can be…

Q: Show that for matrices A, B E RXn, a vector w = ABx can be written as w = E,(b{ x)a;, %3D :D1 where…

A: Since, A,B∈ℝn×n. ∴ A, B have 'n' rows and 'n' columns with entries as real numbers. The given vector…

Q: Let A be a 6 x 5 matrix. What must a and b be in order to define T : Rª → R* by T(x) = Ax? II

A:

Q: Is it true or false? |A+ B" |=| AT + B[T for any nxn matrices A and B. Birini seçin:

A: We are asked to find the statement is true or false.

Q: For A e Mnxn(C), the function ||A||. = max1<ijśn |aij| is a norm on Mnxn(C) but not a matrix norm.…

A: Matrix Norm: Let Mn×n(ℂ) be the vector space of all matrices of order n with entries in the field ℂ,…

Linear Algebra

In mathematics, problems can be solved by the arithmetic operators like addition, subtraction, multiplication, and division. In algebra, we represent the numbers by any letter called a variable. If these variables are of degree 1, then it is studied under linear algebra. The first-degree equations involving algebraic expressions are called linear equations. That is, if you represent it by drawing a graph you will get a straight line.