Explore BrainMass


Inverse Matrix

I have tried numerous times, I just don't get it. Problem: Find the Inverse [4 1] [3 1]


When Finding the product how many pairs of numbers must be multiplied together?


Matrix problem attached

Gaussian Elimination

Solve the system of equations by the Gaussian elimination method. Which of the following is NOT a matrix leading to the solution?

Solve the system of equations

QUESTION: Solve the system of equations by the Gaussian elimination method. 2x + y –3z =1 3x - y + 4z =6 x + 2y - z =9 My response: Please explain if I am wrong. I have several more to do. 2 1 -3 1 3 -1 4 6 1 2 -1 9


DAY 1. Multiply the three matrices together in order (A*B*C) to get a fourth matrix 'D'. What is the fourth matrix? DAY 2. Multiply the fourth matrix by the scalar 6 to get a fifth matrix E. DAY 3. Add the fifth matrix to a matrix whose elements are all "2"'s to get a sixth matrix F. What is the sixth matrix? DAY 4.

Matrix Theory

Prove that A is normal if and only if A-A^* and A+A^* commute.

Matrix Theory

Show that Null (A) and Im(A) are not orthogonal. (see Matrix in attached file)

Stiffness Matrix

Please see attached file. How do i equate the mass spring system?

Matrix Theory

Prove that for in H, Thus, N is a homomorphism from onto the positive real numbers. See attached file for full problem description.

Matrix Theory/ Isometries

Fix in Consider the real linear map given by (a) With respect to the basis B = {1, i, j, k}, find the associated matrix for . (b) Find the associated matrix A (sub alpha bar) for M (sub alpha bar). Compare with (a). (c) Compute det(A sub alpha) and det (A sub alpha bar). Interpret. See attached file for ful