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Equation Solving
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Symbolic and numerical equation solving and root finding, differential equations, recurrence and functional equations, systems of equations, linear systems, visualization of solutions...

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How to deal with singularity in numerical integration?

QUESTION FROM: Kat Z | 11 years ago BY: Vitaliy Kaurov
Equation Solving , Numerical Computation , Wolfram Language
3
REPLIES
8.1K
VIEWS

Nonlinear system of equations

QUESTION FROM: Imran Khan | 11 years ago BY: Daniel Lichtblau
Equation Solving , Wolfram Language
3
REPLIES
8.6K
VIEWS

Numerical PDE solution in spherical coordinates

QUESTION FROM: Michael Person | 11 years ago BY: Gianluca Gorni
Equation Solving , Numerical Computation , Wolfram Language
3
REPLIES
8.7K
VIEWS

Why am I not seeing the plot

QUESTION FROM: jack hold | 11 years ago BY: Eric Rimbey
Equation Solving , Graphics and Visualization , Wolfram Language
3
REPLIES
5.1K
VIEWS

Slow code for a large system of equations

QUESTION FROM: peter azizi | 11 years ago BY: Gianluca Gorni
Equation Solving , Wolfram Language
3
REPLIES
8.9K
VIEWS

Help minimizing a variable?

QUESTION FROM: Alex Daitch | 11 years ago BY: Frank Kampas
Algebra , Equation Solving , Wolfram Language
3
REPLIES
3.7K
VIEWS

Overdetermined Linear LeastSquares solution of AX=B with constraint [B]>0

QUESTION FROM: Bijan Deb | 11 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematica , Optimization , ...
3
REPLIES
9.5K
VIEWS

Using Series for a function with NIntegrate

QUESTION FROM: Ian Berkman | 11 years ago BY: Frank Kampas
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
3
REPLIES
5.8K
VIEWS

Simple Math Problem Shows Massive Flaw In All Machine Learning Algorythims

QUESTION FROM: David Johnston | 11 years ago BY: David Johnston
Computer Science , Data Science , Discrete Mathematics , ...
3
REPLIES
19.8K
VIEWS

Large time difference when >= is used compared to ==?

QUESTION FROM: Paul Cleary | 11 years ago BY: Paul Cleary
Equation Solving , High-Performance Computing , Mathematica , ...
3
REPLIES
9.5K
VIEWS

Need help with NDSolve

QUESTION FROM: Kaushik Mallick | 11 years ago BY: Kaushik Mallick
Calculus , Equation Solving , Mathematica , Mathematics , ...
3
REPLIES
13.5K
VIEWS

Find all roots in no linear equation?

QUESTION FROM: Luis Itzá Vázquez Salazar | 11 years ago BY: Mariusz Iwaniuk
Algebra , Equation Solving , Mathematica , Mathematics , ...
3
REPLIES
6.7K
VIEWS

How to solve a 3th order non-linear differential equation?

QUESTION FROM: teo ytriu | 11 years ago BY: Devendra Kapadia
Calculus , Equation Solving , Wolfram Language
3
REPLIES
11.2K
VIEWS

How Can I Solve A Stiff Boundary Value Problem In Mathematica 10?

QUESTION FROM: Marcolino R-M | 11 years ago BY: Marcolino R-M
Calculus , Equation Solving , Mathematica , Numerical Computation , ...
3
REPLIES
13.3K
VIEWS

unstable context

QUESTION FROM: david schafer | 11 years ago BY: Ilian Gachevski
Algebra , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
5.5K
VIEWS

Solving an equation of two variables where one var varies, and plot

QUESTION FROM: J L | 11 years ago BY: J L
Discrete Mathematics , Equation Solving , ...
3
REPLIES
11.3K
VIEWS

Solving the Laplace equation with only Neumann boundary conditions

QUESTION FROM: Jens Rix | 11 years ago BY: Jens Rix
Calculus , Equation Solving , Mathematica , Numerical Computation , ...
3
REPLIES
12.2K
VIEWS

ReplaceAll and Reduce

QUESTION FROM: Mutatis Mutandis | 11 years ago BY: Mutatis Mutandis
Equation Solving , Mathematics , Wolfram|Alpha , Wolfram Language
3
REPLIES
13.9K
VIEWS

How do i translate this equation to mathematica language?

QUESTION FROM: azade53 | 11 years ago BY: azade53
Algebra , Calculus , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
6K
VIEWS

How can I recreate my equation within my following function

QUESTION FROM: jethro holcroft | 11 years ago BY: Luis Ledesma
Dynamic Interactivity , Equation Solving , ...
3
REPLIES
10.2K
VIEWS

How to solve a second order nonlinear ordinary differential equation?

QUESTION FROM: Omer Tzuk | 11 years ago BY: Nasser M. Abbasi
Calculus , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
9.4K
VIEWS

Understanding Mathematica's seeming inability to solve a simple DiffyQ

QUESTION FROM: Lawrence Cosner | 11 years ago BY: Lawrence Cosner
Calculus , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
5.4K
VIEWS

Integrating second order differential equation

QUESTION FROM: Filippo Cova | 12 years ago BY: W. Craig Carter
Calculus , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
6.5K
VIEWS

Unknown error in NDSolve and other issues

QUESTION FROM: Konstantin Nosov | 12 years ago BY: Konstantin Nosov
Equation Solving , Mathematica , Numerical Computation
3
REPLIES
7K
VIEWS

Is it possible to solve an equation containing an infinite expression?

QUESTION FROM: INTAN SUPRABA | 12 years ago BY: Alexei Boulbitch
Equation Solving , Statistics and Probability , Wolfram Language
3
REPLIES
9.8K
VIEWS

How to solve 2-D Laplace equation in a rectangular domain analytically?

QUESTION FROM: Phil R | 12 years ago BY: Phil R
Calculus , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
11.8K
VIEWS

The function x appears with no arguments.

QUESTION FROM: Vindarius Johnson | 12 years ago BY: Frank Kampas
Calculus , Equation Solving , Mathematica , Modeling
3
REPLIES
9.4K
VIEWS

How rare is it for a sparse rectangular matrix to have an exact solution?

QUESTION FROM: Douglas Youvan | 12 years ago BY: Douglas Youvan
Algebra , Discrete Mathematics , Equation Solving , ...
3
REPLIES
7.4K
VIEWS

Solving a system of two coupled quadratic equations

QUESTION FROM: Darya Aleinikava | 12 years ago BY: Recep Kahraman
Equation Solving , Mathematica , Mathematics
3
REPLIES
12.3K
VIEWS

Bug in show steps for natural language DEQ input

QUESTION FROM: q q | 12 years ago BY: Daniel Lichtblau
Equation Solving , Mathematica , Mathematics
3
REPLIES
6.6K
VIEWS

sorry, how to solve it???

QUESTION FROM: salina azhar | 12 years ago BY: David Reiss
Equation Solving , Mathematics , Wolfram|Alpha , Wolfram Language
3
REPLIES
5.7K
VIEWS

Why Mathematica cannot solve simple power eqation?:(

QUESTION FROM: Darek Aksamit | 12 years ago BY: Daniel Lichtblau
Calculus , Equation Solving , Mathematica , Mathematics , Physics
3
REPLIES
6.9K
VIEWS

Can't get this code to work - warning from Solve

QUESTION FROM: nffddn | 12 years ago BY: nffddn
Equation Solving , Wolfram Language
3
REPLIES
6.6K
VIEWS

Mathematica only rewrites the differential equation

QUESTION FROM: Mattias Pettersson | 12 years ago BY: Marco Thiel
Calculus , Equation Solving , Physics , Wolfram Language
3
REPLIES
5.7K
VIEWS

Solve not working?

QUESTION FROM: Tristan Knowlton | 12 years ago BY: Tristan Knowlton
Equation Solving , Mathematica , Wolfram Language
3
REPLIES
19.9K
VIEWS

Help weird NDSolve error, system of ODE and an algebraic equation

QUESTION FROM: Renee Dale | 12 years ago BY: Guy Mongelli
Biological Sciences , Calculus , Equation Solving , Mathematica , ...
3
REPLIES
17.2K
VIEWS

How do you interpret this Solve output ?

QUESTION FROM: Ryan Gardner | 12 years ago BY: Bill Simpson
Algebra , Equation Solving , Physics , Wolfram Language
3
REPLIES
5.5K
VIEWS

Solve or NSolve doesn't give any solution in twelve hours

QUESTION FROM: bilik.miloslav | 12 years ago BY: bilik.miloslav
Algebra , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
8.5K
VIEWS

?NumericQ for NMaximize NIntegrate ?

QUESTION FROM: Thibault Michel | 12 years ago BY: Sean Clarke
Calculus , Equation Solving , Mathematica , Mathematics , ...
3
REPLIES
6K
VIEWS

How can I write a simple program to give several outputs for 2 inputs?

QUESTION FROM: Drew Hammerman | 12 years ago BY: Mirek M
Dynamic Interactivity , Equation Solving , Numerical Computation , ...
3
REPLIES
8.3K
VIEWS

The Newton's method in the mean of Interval

QUESTION FROM: Julia Ilkiv | 12 years ago BY: Anonymous User
Equation Solving , Mathematica
3
REPLIES
5.7K
VIEWS

How to Speed Up Linear System of ODE

QUESTION FROM: selahittin cinar | 12 years ago BY: selahittin cinar
Algebra , Calculus , Equation Solving , Mathematica , ...
3
REPLIES
8.2K
VIEWS

FindMaximum huge divergence from expected results

QUESTION FROM: Henry Banks | 12 years ago BY: Bill Simpson
Equation Solving , Mathematica , Numerical Computation , ...
3
REPLIES
6.8K
VIEWS

How to find global minimum value for big, exact objective function

QUESTION FROM: Usman Rauf | 12 years ago BY: Bill Simpson
Equation Solving , Mathematica , Numerical Computation , ...
3
REPLIES
6.1K
VIEWS

Equation Solving - Bug?

QUESTION FROM: Felix Feist | 12 years ago BY: Marco Thiel
Equation Solving , Mathematica , Tuning and Debugging , ...
3
REPLIES
6.2K
VIEWS

How to use Module with NSolve?

QUESTION FROM: A BC | 12 years ago BY: A BC
Equation Solving , Mathematics , Numerical Computation , ...
3
REPLIES
6.7K
VIEWS

Elimination of small values in expression

QUESTION FROM: Konstantin Nosov | 12 years ago BY: Michael Rogers
Calculus , Equation Solving , Mathematica
3
REPLIES
5.9K
VIEWS

Looking to store 1 row, 8 column tables over a loop

QUESTION FROM: Josh Wofford | 12 years ago BY: Josh Wofford
Equation Solving , Mathematica , Wolfram Language
3
REPLIES
7.3K
VIEWS

Linear algebra & Calculus& equation

QUESTION FROM: Ahmed Al-Ali | 12 years ago BY: Michael Rogers
Architecture , Calculus , Computable Document Format , Economics , ...
3
REPLIES
25.6K
VIEWS

Get rid of a variable using Simplify/Assuming

QUESTION FROM: Fabian Wiek | 12 years ago BY: Michael Rogers
Equation Solving , Mathematica
3
REPLIES
6.7K
VIEWS

Problem using WhenEvent to constrain solution

QUESTION FROM: Julian Lovlie | 13 years ago BY: Nicolas Venuti
Engineering , Equation Solving , Mathematica , Mathematics , ...
3
REPLIES
25.4K
VIEWS

Solving a system of non linear differential equation of 6 DOF

QUESTION FROM: shair mendoza | 13 years ago BY: Bill Simpson
Equation Solving , Wolfram Language
3
REPLIES
29.7K
VIEWS

How to numerically compute an implicit equation?

QUESTION FROM: joaquin mendez | 13 years ago BY: joaquin mendez
Equation Solving , Mathematica , Mathematics , ...
3
REPLIES
14.2K
VIEWS

Piecewise Initial Conditions in NDSolve

QUESTION FROM: Danila Zharenkov | 13 years ago BY: Danila Zharenkov
Calculus , Equation Solving , Mathematica , Mathematics
3
REPLIES
6.5K
VIEWS

A graphical solution of two equations is possible. Numerically, too?

QUESTION FROM: Niels Nutzer | 13 years ago BY: Frank Kampas
Algebra , Equation Solving , Mathematica , Mathematics , ...
3
REPLIES
7.1K
VIEWS

Singularity problem in “NDSolve” in Mathematica

QUESTION FROM: moumita das | 13 years ago BY: Frank Kampas
Equation Solving , Mathematica , Physics
3
REPLIES
21.2K
VIEWS

Reducing cubics

QUESTION FROM: Bruce Torrence | 13 years ago BY: Bruce Torrence
Algebra , Equation Solving , Mathematica , Mathematics
3
REPLIES
9.3K
VIEWS

Plots of solution of second order ODE not for my initial conditions

QUESTION FROM: José D.S. | 13 years ago BY: Jesus Hernandez
Equation Solving , Mathematics , Numerical Computation , Wolfram|Alpha
3
REPLIES
7.8K
VIEWS

The entropy bagel: complex roots of Littlewood polynomials

CONTRIBUTED BY: Ed Pegg | 30 days ago BY: Paul Abbott
Staff Picks , Algebra , Equation Solving , ...
2
REPLIES
435
VIEWS

Investigating validity of AI-derived stripped gluon amplitudes with symbolic computation

CONTRIBUTED BY: Dennis Foren | 2 months ago BY: David Chester
Staff Picks , Equation Solving , High-Performance Computing , ...
2
REPLIES
4.4K
VIEWS

Extracting results from Table[Solve[]...] functions return

QUESTION FROM: Bob Freeman | 3 months ago BY: Bob Freeman
Equation Solving , Mathematics , Wolfram Language
2
REPLIES
352
VIEWS

All seven variables are real numbers. Is it possible to obtain an analytical solution?

QUESTION FROM: Wang Jiapeng | 3 months ago BY: EDITORIAL BOARD
Algebra , Equation Solving , Symbolic Computations , Wolfram Language
2
REPLIES
383
VIEWS

Analytical closed-form solution of the Bagley-Torvik equation

CONTRIBUTED BY: Juan Luis Gonzalez Santander | 3 months ago BY: Mariusz Iwaniuk
Staff Picks , Algebra , Calculus , Equation Solving , ...
2
REPLIES
496
VIEWS

Looping equations solving doesn't produce any output?

QUESTION FROM: Bob Freeman | 3 months ago BY: Bob Freeman
Algebra , Equation Solving , Mathematics , Wolfram Language
2
REPLIES
370
VIEWS

Change of state variables for general stochastic processes

CONTRIBUTED BY: Bruno Tenorio | 3 months ago BY: EDITORIAL BOARD
Staff Picks , Equation Solving , Graphics and Visualization , ...
2
REPLIES
766
VIEWS

Reaction-diffusion on discrete lattices: pattern formation and spectral analysis

CONTRIBUTED BY: Guhan Thiagarajan | 3 months ago BY: Guhan Thiagarajan
Staff Picks , Algebra , Calculus , Equation Solving , ...
2
REPLIES
991
VIEWS

How to avoid error: Equations may not give solutions for all "solve" variables

QUESTION FROM: Nomsa Ledwaba | 4 months ago BY: Gianluca Gorni
Algebra , Equation Solving
2
REPLIES
535
VIEWS

How to obtain the following equality relationship?

QUESTION FROM: Wen Dao | 6 months ago BY: Updating Name
Equation Solving , Mathematics , Symbolic Computations , ...
2
REPLIES
930
VIEWS

Determining whether a line is tangent to a curve

QUESTION FROM: Wen Dao | 7 months ago BY: Michael Rogers
Calculus , Equation Solving , Mathematics , Wolfram Language
2
REPLIES
1.6K
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

How to Use FullSimplify to breakdown algebraic expression

QUESTION FROM: James Parkus | 8 months ago BY: James Parkus
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
2
REPLIES
1.5K
VIEWS

How to solve a couple of ODEs in two variables

QUESTION FROM: Safinaz Salem | 11 months ago BY: Safinaz Salem
Calculus , Equation Solving , Mathematics , Wolfram Language
2
REPLIES
1.3K
VIEWS

Generating natural structures with Wolfram

QUESTION FROM: Denis Ivanov | 11 months ago BY: Denis Ivanov
Biological Sciences , Equation Solving , Mathematics , Modeling , ...
2
REPLIES
2K
VIEWS

Unexpected result in equation elimination from Wolfram Alpha

QUESTION FROM: Ron Hartikka | 1 year ago BY: Ron Hartikka
Algebra , Equation Solving , Mathematics , Wolfram|Alpha
2
REPLIES
1.9K
VIEWS

Billiard dynamics: from regularity to chaos

CONTRIBUTED BY: Sebastian Rodriguez | 1 year ago BY: Bruno Tenorio
Staff Picks , Algebra , Calculus , Equation Solving , ...
2
REPLIES
5K
VIEWS

FEM modeling for plasticity in solid mechanics

CONTRIBUTED BY: Alessandro Mastrofini | 1 year ago BY: xzczd 　
Staff Picks , Calculus , Equation Solving , ...
2
REPLIES
3.5K
VIEWS

Any trial for RBF-FD method? (A method for PDE on irregular region)

QUESTION FROM: xzczd 　 | 2 years ago BY: xzczd 　
Equation Solving , Mathematica , Mathematics , ...
2
REPLIES
10.3K
VIEWS

FindMaximum::nrnum: The function value is not a real number

QUESTION FROM: Shafa Hananta | 2 years ago BY: Yifa Tian
Equation Solving , Optimization , Mathematics , ...
2
REPLIES
2.3K
VIEWS

Investigate the complete integrability, solitary wave solutions and solitons of the Gardner equation

CONTRIBUTED BY: Willy Hereman | 2 years ago BY: Willy Hereman
Staff Picks , Calculus , Equation Solving , Mathematica Add-Ons , ...
2
REPLIES
2.8K
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

Empty output from ParametricPlot

QUESTION FROM: Malej Est | 2 years ago BY: Malej Est
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
1.8K
VIEWS

Access DSolve solutions as plotable functions

CONTRIBUTED BY: Paul Warburton | 2 years ago BY: Paul Warburton
Calculus , Equation Solving , Graphics and Visualization , ...
2
REPLIES
1.6K
VIEWS

Find the function for a decision variable

QUESTION FROM: Shafa Hananta | 2 years ago BY: Gianluca Gorni
Calculus , Equation Solving , Optimization , Operations Research , ...
2
REPLIES
2.6K
VIEWS

Unable to state a simple square-well Schrödinger problem: "This system cannot be solved"

QUESTION FROM: Christer Gustafsson | 2 years ago BY: Christer Gustafsson
Algebra , Equation Solving , Mathematics , Physics , Wolfram Language
2
REPLIES
2.8K
VIEWS

Error from FindRoot: The function value is not a list of numbers

QUESTION FROM: Jonathan Wooldridge | 2 years ago BY: Jonathan Wooldridge
Economics , Equation Solving , Graphics and Visualization , ...
2
REPLIES
4.2K
VIEWS

Error using NDSolve

QUESTION FROM: J McDonald | 2 years ago BY: EDITORIAL BOARD
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
1.9K
VIEWS

NSolve and FindRoot unable to solve system of trig equations

QUESTION FROM: Alice Wang | 2 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
2.3K
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

[WSS21] Use neural network to predict the solution of partial differential

CONTRIBUTED BY: Alireza Bafandeh | 2 years ago BY: Faz 1
Staff Picks , Artificial Intelligence , Calculus , Data Science , ...
2
REPLIES
7.4K
VIEWS

Using implicit Euler and fixed step size for solving

QUESTION FROM: James James | 2 years ago BY: Eric Boone
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
4.1K
VIEWS

Mathmatica pefromance and CPU usage in equation solving

QUESTION FROM: Nima Moini | 2 years ago BY: Nima Moini
Equation Solving , High-Performance Computing , Mathematica , ...
2
REPLIES
2.8K
VIEWS

Finding critical points with NMaximize[] and Solve[] yielding different results query

QUESTION FROM: Byron Alexander | 2 years ago BY: Byron Alexander
Equation Solving , Graphics and Visualization , Optimization , ...
2
REPLIES
3.4K
VIEWS

Simplifying/reducing system of equations

QUESTION FROM: Frédéric Bourgeon | 2 years ago BY: Bill Nelson
Equation Solving , Mathematics , Wolfram|Alpha
2
REPLIES
2.7K
VIEWS

No output when optimising an integration function

QUESTION FROM: Anne Shirley | 2 years ago BY: Ankit Kantheti
Calculus , Economics , Equation Solving , Mathematics , ...
2
REPLIES
3.3K
VIEWS

Solving a system of three fractional order differential equations in the sense of Caputo

QUESTION FROM: Burhanuddin Safi | 2 years ago BY: Burhanuddin Safi
Calculus , Equation Solving , Graphics and Visualization , ...
2
REPLIES
2K
VIEWS

Why I get obscure error messages in NDSolve?

QUESTION FROM: Leslaw Bieniasz | 2 years ago BY: Kuba Sunderland-Ober
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
3.1K
VIEWS

What is the best accuracy available, of PDE solving?

QUESTION FROM: Leslaw Bieniasz | 2 years ago BY: Updating Name
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
2.2K
VIEWS

Error solving nonlinear coupled ODE: ndnum: Encountered non-numerical value for a derivative

QUESTION FROM: Muhammad Usman | 2 years ago BY: Muhammad Usman
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
2.7K
VIEWS

Delay Differential Equations with variable delay

QUESTION FROM: Richard Jensen | 2 years ago BY: Richard Jensen
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
2.3K
VIEWS

[BOOK] Parameterizing Regular Quadratic Surface Intersection Curves

CONTRIBUTED BY: Barry H Dayton | 2 years ago BY: Barry H Dayton
Staff Picks , Algebra , Equation Solving , Geometry , ...
2
REPLIES
4K
VIEWS
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