Threads Tagged with matrices Thread / Thread Starter Last Post Replies Views 1. The problem statement, all variables and given/known data a) Find the inverse of the matrix: \begin{pmatrix}1... Feb28-14 10:22 AM Mark44 7 125 Calculus & Beyond Homework Hello, The product of a 2x5 matrix P and a 5x3 matrix B shall be a 2x3 zero matrix. P and B are all matrices of... Feb26-14 08:53 AM D H 5 312 Linear & Abstract Algebra 1. The problem statement, all variables and given/known data I thought it would be better to attach it. 2.... Feb24-14 09:20 PM samjohnny 2 124 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data A polynomial of degree two or less can be written on... Feb20-14 10:31 AM Mutaja 12 178 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data let A and B be nXn invertible matrices. Show that... Feb19-14 07:36 AM HallsofIvy 3 113 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Find nonzero matrices A; B; C such that AC = BC and... Feb13-14 03:52 PM AlephZero 3 138 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data https://imageshack.com/i/jwfhpwj 2. Relevant... Feb10-14 12:59 AM nchin 0 105 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Let A be the set of all 3x3 symmetric matrices all of... Feb3-14 11:25 PM haruspex 4 231 Precalculus Mathematics Homework Hey folks. I'm working on a project which seems to be encountering a problem. I took Linear Algebra a few years... Feb2-14 07:18 PM FactChecker 9 471 Linear & Abstract Algebra Hi everyone, I have two matrices A and B, A= and B=. I have to proves theoretically that two of the eigenvalues... Jan20-14 11:29 AM wangchong 18 1,719 Linear & Abstract Algebra Hi All, I have a simple problem consider two matrix equations A1X=B1 A2X=B2 A1 and A2 are 3X3 matrix.... Jan1-14 08:16 AM sudipta4 7 527 Linear & Abstract Algebra Hi all, I have two matrices A=0 0 1 0 0 0 0 1 a b a b c d c d and B=0 0 0... Dec19-13 07:24 PM AlephZero 1 515 Linear & Abstract Algebra Could anyone let me know of a good resource that I could use to learn matrix mathematics? I'm not sure if that is the... Dec13-13 08:01 PM kieth89 9 907 Science & Math Textbooks As I understand it, the value of a 4-vector x in another reference frame (x') with the same orientation can be derived... Dec13-13 07:06 AM Bill_K 6 629 Special & General Relativity I need to prove that a 3x3 matrix with all odd entries will have a determinant that is a multiple of 4. This is how... Dec8-13 05:42 PM D H 3 345 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data http://i.imgur.com/0dVsrxc.png 2. The attempt at a... Dec8-13 05:23 PM Ray Vickson 1 281 Calculus & Beyond Homework ##GL(n,\mathbb{R})## is set of invertible matrices with real entries. We know that SO(n,\mathbb{R}) \subset... Dec4-13 01:28 PM jgens 3 451 Linear & Abstract Algebra How are convolution matrices and convolution integrals related, they seem to both be related to signal processing but... Nov17-13 03:19 PM MathWarrior 0 475 General Math Lets suppose a 4×4 matrix A has two identical rows with some other 4×4 matrix B. Does that imply there determinant is... Nov15-13 07:45 AM HallsofIvy 4 624 Linear & Abstract Algebra Dear PhysicsForum, We have just treated the Dirac equation and its lagrangian during our QFT course, but we have... Nov12-13 03:37 AM PhilDSP 1 471 Quantum Physics Let V and W be two finite-dimensional vector spaces over the field F. Let B be a basis of V, and let C be a basis of... Nov5-13 09:10 AM HallsofIvy 1 224 Calculus & Beyond Homework aklsdk Oct29-13 10:05 AM D H 1 806 Math & Science Software 1. The problem statement, all variables and given/known data Whats up guys! I've got this question typed up in... Oct21-13 09:52 PM Dick 2 558 Advanced Physics Homework 1. The problem statement, all variables and given/known data This is quite a long problem, and I have most of it... Oct19-13 09:33 PM richyw 2 282 Advanced Physics Homework Basic matrices ( 1 2) for fixed ## m \geq 2 ## let ## \epsilon (i,j) ## denote the mxm matrix ## \epsilon (i,j)_{rs} = \delta _{ir} \delta... Oct17-13 01:51 PM converting1 25 561 Calculus & Beyond Homework Please do not be offended by my literary style. I find thinking about mathematical problems in such a way helps me... Oct15-13 07:01 AM electronicengi 9 667 Linear & Abstract Algebra Hi Everyone, I am trying to draw the function P = cos(A*kx*x +A*ky*y + A*kz*z) + 1i*sin((A*kx*x +A*ky*y +... Oct11-13 10:22 AM mtirmize 0 651 Math & Science Software Pauli matrices ( 1 2) 1. Consider the 2x2 matrix \sigma^{\mu}=(1,\sigma_{i}) where \sigma^{\mu}=(1,\sigma) where 1 is the identity... Oct6-13 09:53 AM George Jones 18 444 Advanced Physics Homework I posted this question over at the QM page, http://www.physicsforums.com/showthread.php?t=714076 but I realized... Oct4-13 10:53 PM sokrates 3 662 Linear & Abstract Algebra Just going over my linear algebra notes and I've forgotten the formal definition of ## \epsilon(i,j)_{rs} ## I have... Oct3-13 07:09 PM brmath 2 273 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Find all the values of h and k such that the system: ... Oct2-13 03:10 PM fogvajarash 11 752 Precalculus Mathematics Homework True or False. If true explain or prove answer, and if false give an example to show the statement is not always true.... Oct2-13 02:48 AM vela 6 404 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data Here is the problem: ... Sep26-13 08:54 AM HallsofIvy 11 649 Precalculus Mathematics Homework I read that scalar matrices are the center of the ring of matrices. How would I prove this? Tips are appreciated. It... Sep12-13 10:44 AM Axiomer 1 824 Linear & Abstract Algebra 1. The problem statement, all variables and given/known data Find h so that: -8x + -7y = 7 16x + hy = 14 ... Sep12-13 06:05 AM lendav_rott 2 593 Precalculus Mathematics Homework Hi, The following equations are from linear regression model notes but there is an aspect of the matrix algebra I... Aug30-13 09:47 PM chiro 1 466 Linear & Abstract Algebra Trying to make sense of the following relation: \sum log d_{j} = tr log(D) with D being a diagonalized matrix. ... Aug30-13 05:57 PM dm4b 3 485 Linear & Abstract Algebra Suppose that ##A## is a diagonalizable ## n \times n ## matrix. Then it is similar to a diagonal matrix ##B##. My... Aug20-13 08:54 AM mathwonk 5 650 Linear & Abstract Algebra I am trying to prove that for any two vectors x,y in ##ℂ^{n}## the product ## \langle x,y \rangle = xAy^{*} ## is an... Aug16-13 08:41 PM chiro 4 571 Linear & Abstract Algebra Hi all, I would like to ask about the eigenvalues of adjacency matrices of a simple undirected unweighted graph. I... Aug16-13 03:53 PM simpleton 0 451 Linear & Abstract Algebra