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Unexpected output from matrix inversion

QUESTION FROM: Leo Murphy | 1 year ago BY: Michael Rogers
Algebra , Mathematics , Wolfram Language
5
REPLIES
2.6K
VIEWS

Solving system of 7 equations doesn't finish

QUESTION FROM: Sami Heidari | 1 year ago BY: Sami Heidari
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
2.5K
VIEWS

Help needed with 2D Schrödinger equation using discrete Fourier transform and Split-Operator method

QUESTION FROM: Klaus von Bloh | 2 years ago BY: Klaus von Bloh
Algebra , Computer Science , Equation Solving , ...
2
REPLIES
4.1K
VIEWS

Sum and Product a feature request

QUESTION FROM: Robert Nowak | 2 years ago BY: Robert Nowak
Algebra , Mathematics , Symbolic Computations , Wolfram Language
8
REPLIES
2.9K
VIEWS

Accessing matrix elements and evaluating terms multiplied by zero

QUESTION FROM: Arun KG | 2 years ago BY: Arun KG
Algebra , Mathematics , Wolfram Language
6
REPLIES
3.6K
VIEWS

How to find the value of f(2023)+f(2024) ?

QUESTION FROM: Lee Tao | 2 years ago BY: Jim Baldwin
Algebra , Equation Solving , Mathematics , Wolfram Language
2
REPLIES
3.7K
VIEWS

Unable to Simplify non-commutative Expression Further

QUESTION FROM: Hongyi Zhao | 2 years ago BY: Mauricio de Oliveira
Algebra , Mathematics , Wolfram Language
6
REPLIES
5K
VIEWS

Deriving a matrix from a given matrix equation

QUESTION FROM: Hongyi Zhao | 3 years ago BY: Hongyi Zhao
Algebra , Mathematics , Wolfram Language
8
REPLIES
4.1K
VIEWS

How to factor this polynomial?

QUESTION FROM: M M | 3 years ago BY: Gianluca Gorni
Algebra , Mathematics , Wolfram Language
3
REPLIES
2.8K
VIEWS

Displaying order of certain polynomials?

QUESTION FROM: Theta Rho | 3 years ago BY: Rohit Namjoshi
Algebra , Mathematics , Wolfram Cloud , Wolfram Language
5
REPLIES
3.3K
VIEWS

Unexpected behavior of sum differentiation and KroneckerDelta

QUESTION FROM: Yaroslav Drachov | 3 years ago BY: Yaroslav Drachov
Algebra , Mathematics , Wolfram Language
4
REPLIES
3.8K
VIEWS

Create the abstract group (or space group) using relators (or generators).

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Hongyi Zhao
Algebra , Group Theory , Mathematics , Wolfram Language
10
REPLIES
7K
VIEWS

HermitianMatrixQ doesn't work for a symbolic matrix

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Hongyi Zhao
Algebra , Mathematics , Wolfram Language
15
REPLIES
4.9K
VIEWS

Use a Wolfram Language equivalent to Matlab's "linspace" function?

QUESTION FROM: Ehud Behar | 5 years ago BY: Ehud Behar
Algebra , Mathematics , Wolfram Language
4
REPLIES
31.2K
VIEWS

HankelH1 real part for large values of n differs from Python result

QUESTION FROM: D D | 5 years ago BY: D D
Algebra , Astronomy , Computer Science , Data Science , Economics , ...
9
REPLIES
7.9K
VIEWS

Shade a submatrix within a matrix

QUESTION FROM: Thomas Vermaak | 5 years ago BY: Thomas Vermaak
Algebra , Mathematics , Wolfram|Alpha Notebook Edition
4
REPLIES
8.8K
VIEWS

Unexpected behaviour from AxiomaticTheory["RingAxioms"]?

QUESTION FROM: Bruce Colletti | 5 years ago BY: Bruce Colletti
Algebra , Mathematics , Wolfram Language
2
REPLIES
7K
VIEWS

[WWS21] The Multiway Systems of Dynkin Diagrams

QUESTION FROM: Sam Willis | 5 years ago BY: EDITORIAL BOARD
Staff Picks , Algebra , Discrete Mathematics , Graphs and Networks , ...
2
REPLIES
8.8K
VIEWS

Solve a system of non-linear equations?

QUESTION FROM: Mohammad Ahmad Shoeb | 5 years ago BY: Mohammad Ahmad Shoeb
Algebra , Equation Solving , Mathematics , Wolfram Language
12
REPLIES
8.5K
VIEWS

Remove elements of a matrix from a larger one?

QUESTION FROM: Amirhosein Hsa | 6 years ago BY: Hans Dolhaine
Algebra , Wolfram Language
14
REPLIES
4.9K
VIEWS

Incorrect solution, how to control such behaviour of the Solve function?

QUESTION FROM: Albert Lebedev | 6 years ago BY: Albert Lebedev
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
3
REPLIES
7.1K
VIEWS

Elementary Row Operations in Wolfram|Alpha

QUESTION FROM: Betty Love | 6 years ago BY: Frank Lobue
Algebra , Mathematics , Wolfram|Alpha
10
REPLIES
25.4K
VIEWS

Use FindEquationalProof on the following equation?

QUESTION FROM: Math Logic | 6 years ago BY: Math Logic
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
2
REPLIES
8.1K
VIEWS

Compile to find digits ratio of integers composed by sequential numbers?

QUESTION FROM: Claudio Chaib | 7 years ago BY: Claudio Chaib
Algebra , Compilation , Graphics and Visualization , Optimization , ...
6
REPLIES
8.1K
VIEWS

Solve a system of equations and avoid calculations without response?

QUESTION FROM: Dmitry Chebotarev | 7 years ago BY: Dmitry Chebotarev
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
8
REPLIES
11K
VIEWS

Use FixedPointList?

QUESTION FROM: Mellow hibey | 7 years ago BY: Mellow hibey
Algebra , Calculus , Computer Science , Mathematics , Wolfram Language
2
REPLIES
6.3K
VIEWS

Lie Groups and Lie Algebras using Wolfram Language?

QUESTION FROM: Tonde Kush | 8 years ago BY: Tonde Kush
Algebra , Group Theory , Mathematics , Packages , Physics , ...
2
REPLIES
14.2K
VIEWS

Drawing tangent line on x*Log[Abs[x]]

QUESTION FROM: Clement Roblin | 9 years ago BY: Clement Roblin
Algebra , Calculus , Graphics and Visualization , Wolfram Language
4
REPLIES
10.1K
VIEWS

[?] Is there one term missing when using Table?

QUESTION FROM: Zhehao Zhang | 9 years ago BY: Zhehao Zhang
Algebra , Calculus , Wolfram Language
6
REPLIES
12.5K
VIEWS

[?] Simplify the logarithm of a sum: Log[a+b]?

QUESTION FROM: Alberto Silva Ariano | 9 years ago BY: Sander Huisman
Algebra , Mathematics , Symbolic Computations , Wolfram Language
2
REPLIES
10.7K
VIEWS

[?] Use the solution of FindRoot as a integrate limit?

QUESTION FROM: Yonggang Luo | 9 years ago BY: Patrick Scheibe
Algebra , Calculus , Equation Solving , Mathematics , ...
3
REPLIES
9.2K
VIEWS

Avoid RowReduce Error with swapped variable names?

QUESTION FROM: Dominik Luz | 9 years ago BY: Michael Rogers
Algebra , Equation Solving , Geometry , Mathematics , ...
10
REPLIES
10.5K
VIEWS

Pick out pairs of numbers in a list that add up to any number in 2nd list?

QUESTION FROM: Manjunath Babu | 9 years ago BY: Sander Huisman
Algebra , Mathematics , Wolfram Language
9
REPLIES
12.5K
VIEWS

Using ReplaceAll (/.) with complex variables?

QUESTION FROM: Paul Hillman | 10 years ago BY: Sander Huisman
Algebra , Mathematics , Wolfram Language
9
REPLIES
9.2K
VIEWS

Help me maximize this, please.

QUESTION FROM: bored dude | 11 years ago BY: bored dude
Algebra , Mathematics , Wolfram Language
9
REPLIES
6.1K
VIEWS

Factoring Cubic Equation With no Calculator?

QUESTION FROM: Hoang-Nam Chu | 11 years ago BY: kis miska
Algebra , Mathematics
4
REPLIES
8.9K
VIEWS

Differential Algebraic Equation

QUESTION FROM: Shivi Sv | 11 years ago BY: Shivi Sv
Algebra , Calculus , Equation Solving , Mathematica , Wolfram Language
5
REPLIES
13.2K
VIEWS

How can i use expressions from previous results?

QUESTION FROM: olayinka oyekola | 11 years ago BY: olayinka oyekola
Algebra , Mathematica , Presentation and Notebooks , Wolfram Language
24
REPLIES
20K
VIEWS

symbolic evaluation of sums not simplifying as expected

QUESTION FROM: Paul Bailey | 12 years ago BY: Daniel Lichtblau
Algebra , Mathematica , Wolfram Language
9
REPLIES
11K
VIEWS

Solving equation with Bessel functions BesselJ & BesselK

QUESTION FROM: Saf Al | 12 years ago BY: Bill Simpson
Algebra , Equation Solving , Mathematica , Wolfram Language
13
REPLIES
13.6K
VIEWS

Problems using InverseFunction

QUESTION FROM: Kaushik Kandakatla | 12 years ago BY: Kaushik Kandakatla
Algebra , Equation Solving , Mathematics , Wolfram Language
9
REPLIES
6.8K
VIEWS

Limit, Sqrt, and FullSimplify

QUESTION FROM: Kiaran Dave | 12 years ago BY: Daniel Lichtblau
Algebra , Calculus , Mathematica , Symbolic Computations
4
REPLIES
5.6K
VIEWS

Is it possible to find the equations of motion with Mathematica?

QUESTION FROM: Alexsandro Mota | 12 years ago BY: David Keith
Algebra , Calculus , Equation Solving , Geometry , Group Theory , ...
4
REPLIES
12.9K
VIEWS

plotting eigenvalues of a matrix, speed issues

QUESTION FROM: ralf rueckriemen | 12 years ago BY: Sam Carrettie
Algebra , Graphics and Visualization , Mathematics
5
REPLIES
9.9K
VIEWS

How to 3D plot a volume of revolution?

QUESTION FROM: Hifas Faiz | 12 years ago BY: Marco Thiel
Algebra , Graphics and Visualization , Mathematica , Mathematics
3
REPLIES
19.6K
VIEWS

How can a Boolean representation be displayed as symbolic algebra?

QUESTION FROM: Steve M | 13 years ago BY: Malte Lenz
Algebra , Engineering , Logic and Boolean Algebra , Mathematica , ...
5
REPLIES
15.9K
VIEWS

#[[1]]//FullForm equals 1?

QUESTION FROM: Fred Klingener | 14 years ago BY: chetiya sahabandu
Algebra , Mathematica
2
REPLIES
7K
VIEWS

How to calculate the infimum of a quantified sequence ratio with integer constraints?

QUESTION FROM: Bharath Krishnan | 26 days ago BY: David Trimas
Algebra , Optimization , Mathematics , Wolfram Language
3
REPLIES
329
VIEWS

Are there any other good methods for performing cubic completion?

QUESTION FROM: Bill Blair | 3 months ago BY: Bill Blair
Algebra
3
REPLIES
436
VIEWS

Is there any loop alternative to using If[], Which[] or Piecewise[] ?

QUESTION FROM: Leslaw Bieniasz | 3 months ago BY: Eric Rimbey
Algebra , Wolfram Language
9
REPLIES
848
VIEWS

Viewing eigenvalues and eigenvectors

QUESTION FROM: Mitchell Sandlin | 4 months ago BY: Gianluca Gorni
Algebra , Graphics and Visualization , Mathematics
8
REPLIES
1.2K
VIEWS

Anticommuting spinor calculations

QUESTION FROM: Todd Rowland | 7 months ago BY: Mohammad Bahrami
Algebra , Mathematics , Numerical Computation , Physics , ...
1
REPLIES
1.5K
VIEWS

Does the added notebook reveal a buck in function VectorPlot?

QUESTION FROM: Ulrich Mutze | 7 months ago BY: Gianluca Gorni
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
2
REPLIES
1.7K
VIEWS

Norm[] of real vector

QUESTION FROM: Jay Gourley | 8 months ago BY: Gianluca Gorni
Algebra , Mathematics , Wolfram Language
3
REPLIES
1.5K
VIEWS

Why does the result obtained using this method turn out to be incorrect?

QUESTION FROM: Wen Dao | 8 months ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Wolfram Language
2
REPLIES
1.7K
VIEWS

Unexpected use of k$ notation in output of Reduce?

QUESTION FROM: Lucas Tubacki | 9 months ago BY: Michael Rogers
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
5
REPLIES
2.7K
VIEWS

Checking whether Hessian matrix of a function is positive semidefinite on a hypercube

QUESTION FROM: Amir A. | 11 months ago BY: Amir A.
Algebra , Mathematics , Wolfram Language
6
REPLIES
1.8K
VIEWS

Matrix multiplication between an operator Matrix and another

QUESTION FROM: Thanos Theodorou | 1 year ago BY: Thanos Theodorou
Algebra , Mathematics , Wolfram Language
3
REPLIES
2.2K
VIEWS

How do I plot complex parameters with one real variable?

QUESTION FROM: Nikita Averin | 2 years ago BY: Nikita Averin
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
9
REPLIES
2K
VIEWS

[Solved] Trying to solve polynomial system

QUESTION FROM: Ali Hammoud | 2 years ago BY: Ali Hammoud
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
3
REPLIES
2.6K
VIEWS

Solving system of equations gives empty output, but gives result when reduced

QUESTION FROM: Panron Ryan | 2 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
6
REPLIES
14.7K
VIEWS

Calculating residue at infinity

QUESTION FROM: Bi Shengfan | 3 years ago BY: Daniel Lichtblau
Algebra , Mathematics
2
REPLIES
3.1K
VIEWS

Plotting solutions to an equation for varying parameter value produces empty graphs

QUESTION FROM: Ian P | 3 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Graphics and Visualization , ...
11
REPLIES
4.2K
VIEWS

The error of dot product between two matrices

QUESTION FROM: Hongyi Zhao | 3 years ago BY: Gianluca Gorni
Algebra , Mathematics , Wolfram Language
7
REPLIES
3.8K
VIEWS

Eliminate hangs on addition of irrelevant equations

QUESTION FROM: James Bowery | 3 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
1
REPLIES
3K
VIEWS

How to solve this difficult nonlinear equation involving InverseErf?

QUESTION FROM: Leslaw Bieniasz | 3 years ago BY: Bill Nelson
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
3.3K
VIEWS

How would I represent a simple proof in Mathematica, such as x == 2 => x * x == 4?

QUESTION FROM: Janish Suneja | 3 years ago BY: Gianluca Gorni
Algebra , Mathematics , Wolfram Language
2
REPLIES
3.2K
VIEWS

Problem solving system of three equations

QUESTION FROM: Alex B. | 3 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
3.3K
VIEWS

Cut wood to minimize loss

QUESTION FROM: Nicholas Kormanik | 3 years ago BY: Nicholas Kormanik
Algebra , Optimization , Mathematics , Wolfram Language
6
REPLIES
4.8K
VIEWS

Find an invertible integer matrix that satisfies given conditions

QUESTION FROM: Hongyi Zhao | 3 years ago BY: Bill Nelson
Algebra , Equation Solving , Mathematics , Wolfram Language
7
REPLIES
5.3K
VIEWS

Unexpected result from Reduce[ ] of an inequality?

QUESTION FROM: James James | 3 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Wolfram Language
3
REPLIES
3K
VIEWS

Calculating the series development of 1/(1-2^(1-s))

QUESTION FROM: Chris Bianchi | 3 years ago BY: Henrik Schachner
Algebra , Mathematics , Wolfram|Alpha , Wolfram Language
4
REPLIES
3.9K
VIEWS

Solution for equation that models a car on a banked curve?

QUESTION FROM: Peter Burbery | 3 years ago BY: Mariusz Iwaniuk
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
3.5K
VIEWS

Finding all solutions of the system of equations

QUESTION FROM: Sinval Santos | 4 years ago BY: Sinval Santos
Algebra , Equation Solving , Graphics and Visualization , ...
6
REPLIES
3.6K
VIEWS

Extracting a list from each nxn matrix from a set of matrices

QUESTION FROM: Nomsa Ledwaba | 4 years ago BY: Eric Rimbey
Algebra , Mathematics , Wolfram Language
5
REPLIES
4.1K
VIEWS

The solution of cubic equation x^3+cx=d

QUESTION FROM: Daniel Niu | 4 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
5
REPLIES
4.9K
VIEWS

Are the eigenvectors calculated by Mathematica miscalculated?

QUESTION FROM: Sthen Sdfs | 4 years ago BY: Michael Rogers
Algebra , Mathematica , Mathematics , Wolfram Language
3
REPLIES
4.1K
VIEWS

Unexpect answer for A x B = C x B where A, B, C are R3

QUESTION FROM: Gerald Kamin | 4 years ago BY: Hans Dolhaine
Algebra , Equation Solving , Mathematics , Wolfram Language
6
REPLIES
4.3K
VIEWS

A few problems with the evaluation of limits of multivariable functions

QUESTION FROM: Vinícius Hopkins | 4 years ago BY: Vinícius Hopkins
Algebra , Calculus , Mathematics , Wolfram Language
5
REPLIES
5.8K
VIEWS

Convert a system of linear equations to matrix-form

QUESTION FROM: Werner Geiger | 4 years ago BY: Daniel Lichtblau
Algebra , Mathematics , Wolfram Language
7
REPLIES
8K
VIEWS

Failed to validate the raising operator

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Adiba Shaikh
Algebra , Equation Solving , Mathematics , Wolfram Language
1
REPLIES
5.3K
VIEWS

Why does the output have Nulls? (was: Help me, please!)

QUESTION FROM: Maria Luisa | 5 years ago BY: Eric Rimbey
Algebra , Equation Solving , Mathematica , Wolfram Language
4
REPLIES
10.8K
VIEWS

Define and solve formula syntax problem

QUESTION FROM: Karl S | 5 years ago BY: Rohit Namjoshi
Algebra , Equation Solving , Numerical Computation , Physics , ...
7
REPLIES
4.2K
VIEWS

Limits of Mathematica's numeric precision?

QUESTION FROM: Leon Fairbanks | 5 years ago BY: Gianluca Gorni
Algebra , Mathematica , Mathematics , Numerical Computation , ...
5
REPLIES
7.7K
VIEWS

Plot functions and their guide function images into same coordinate system

QUESTION FROM: Lee Tao | 5 years ago BY: Lee Tao
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
7
REPLIES
4.1K
VIEWS

How can I Rationalize this?

QUESTION FROM: Jairo Smith Quilumbaquin Lanchimba | 5 years ago BY: Jairo Smith Quilumbaquin Lanchimba
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
7
REPLIES
6.7K
VIEWS

Runge Kutta method for a system

QUESTION FROM: Vedat Erturk | 5 years ago BY: Hans Dolhaine
Algebra , Equation Solving , Mathematics , Wolfram Language
28
REPLIES
7.9K
VIEWS

Solving symbolically a system of 3 (complicated) equations

QUESTION FROM: Olimpia Cutinelli Rendina | 5 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
12
REPLIES
6.5K
VIEWS

Numerically calculating the largest root of a function

QUESTION FROM: Alex B | 5 years ago BY: Alex B
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
3
REPLIES
6.7K
VIEWS

Custom multiplication operation between variables

QUESTION FROM: David L | 5 years ago BY: Updating Name
Algebra , Discrete Mathematics , Mathematics , Wolfram Language
4
REPLIES
5.8K
VIEWS

Distance between a point and others is an integer

QUESTION FROM: Paul Cleary | 5 years ago BY: Paul Cleary
Algebra , Calculus , Equation Solving , Mathematics , Wolfram Language
6
REPLIES
7.8K
VIEWS

Printing outputs for Collatz conjecture?

QUESTION FROM: Jonathan Bell | 5 years ago BY: Jonathan Bell
Algebra , Discrete Mathematics , Mathematics , Numerical Computation
6
REPLIES
8.2K
VIEWS

Replace terms in an expression by a single variable?

QUESTION FROM: Rafael Guariento | 5 years ago BY: Rafael Guariento
Algebra , Wolfram Language
3
REPLIES
5.6K
VIEWS

Symbolically solving a trigonometric system of equation

QUESTION FROM: Mateusz Lazarek | 6 years ago BY: Hans Dolhaine
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
7
REPLIES
5.2K
VIEWS

A problem in FunctionDomain?

QUESTION FROM: Daqing Li | 6 years ago BY: Daniel Lichtblau
Algebra , Mathematics , Wolfram Language
14
REPLIES
11.3K
VIEWS

Abs of product with FullSimplify and assumptions not simplifying

QUESTION FROM: Siddhesh Ambhire | 6 years ago BY: Siddhesh Ambhire
Algebra , Mathematics , Wolfram Language
2
REPLIES
4.1K
VIEWS

Improving calculation speed for finding perfect squares using two variables

QUESTION FROM: Jan Eerland | 6 years ago BY: Rohit Namjoshi
Algebra , Computer Science , Equation Solving , Mathematica , ...
5
REPLIES
6.8K
VIEWS

Simplify sum expression containing Kronecker delta?

QUESTION FROM: Michael Helmle | 7 years ago BY: Michael Helmle
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
8
REPLIES
7.1K
VIEWS

Result of Equal with multiple arguments

QUESTION FROM: Martin Guttmann | 7 years ago BY: Szabolcs Horvát
Algebra , Mathematica , Mathematics , ...
9
REPLIES
10.8K
VIEWS

Solve an equation with angle of 2 transfer functions to get the capacitor?

QUESTION FROM: Leo Baumann | 8 years ago BY: Leo Baumann
Algebra , Engineering , Equation Solving , Mathematics , ...
9
REPLIES
9.7K
VIEWS
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