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Numeric equation solving, calculus and statistics, precision and accuracy control for numeric computations...

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Couple space-dependent and space-independent equations in NDSolve?

QUESTION FROM: Tim Nijssen | 9 years ago BY: Daniel Lichtblau
Chemical Engineering , Engineering , Equation Solving , Mathematics , ...
1
REPLIES
10.3K
VIEWS

Solve DE by fourth order Runge Kutta code coupled with the shooting method

QUESTION FROM: seema kumari | 9 years ago BY: Gianluca Gorni
Mathematics , Numerical Computation , Wolfram Language
1
REPLIES
4K
VIEWS

Ratio of two lists

QUESTION FROM: Luis Morales | 9 years ago BY: David Gathercole
Numerical Computation , Wolfram Language
1
REPLIES
7.6K
VIEWS

Plot one dependent variable against another?

QUESTION FROM: Kaushik Mallick | 9 years ago BY: Kaushik Mallick
Calculus , Equation Solving , Graphics and Visualization , ...
2
REPLIES
7.2K
VIEWS

NDSolve for a DE system with an extra term?

QUESTION FROM: Mitja Jan?i? | 9 years ago
Equation Solving , Mathematics , Numerical Computation , ...
0
REPLIES
3.5K
VIEWS

Computing a Jacobi iteration with the WL?

QUESTION FROM: gabse15 l | 9 years ago BY: Jim Baldwin
Calculus , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
6.3K
VIEWS

Determine largest number not divisible by sum of multiples of two primes

QUESTION FROM: Julian Svedosh | 9 years ago BY: Daniel Lichtblau
Numerical Computation , Wolfram|Alpha
6
REPLIES
4.7K
VIEWS

Define a 2x2 differential operator and find it's eigenvalues?

QUESTION FROM: Milan Vicentijevic | 9 years ago
Equation Solving , Mathematics , Numerical Computation , Physics , ...
0
REPLIES
3.4K
VIEWS

Solve Laplaces Equation in Spherical Coordinates using NDSolve

QUESTION FROM: Michael Person | 9 years ago
Equation Solving , Mathematics , Numerical Computation , ...
0
REPLIES
2.8K
VIEWS

NDSolve with time-dependent boundary conditions problem

QUESTION FROM: Tristan Baumberger | 9 years ago
Equation Solving , Material Sciences , Mathematics , ...
0
REPLIES
5K
VIEWS

ListPlot3D to show the dependence of a spectrum on a parameter?

QUESTION FROM: Steve Bardwell | 9 years ago BY: Steve Bardwell
Equation Solving , Graphics and Visualization , ...
4
REPLIES
6K
VIEWS

Solve a large system of partial differential equations?

QUESTION FROM: Mitja Jan?i? | 9 years ago BY: Mitja Jan?i?
Equation Solving , Mathematics , Numerical Computation , ...
1
REPLIES
5.1K
VIEWS

Fitting data using Findfit only works for some of the data?

QUESTION FROM: Anthony Meleco | 9 years ago
Graphics and Visualization , Modeling , Numerical Computation , ...
0
REPLIES
2.4K
VIEWS

Fibonnaci algorithm - explanation for syntax

QUESTION FROM: Tom Zinger | 9 years ago BY: Gianluca Gorni
Mathematics , Numerical Computation , Wolfram Language
1
REPLIES
6.4K
VIEWS

Using Fourier function to determine discreet fourier transform of a signal

QUESTION FROM: Syed Muhammad Hilmi Syed Anera | 9 years ago BY: Daniel Lichtblau
Calculus , Discrete Mathematics , Mathematics , ...
1
REPLIES
6.6K
VIEWS

Cumulative definte integral makes kernel run slow

QUESTION FROM: Kaushik Mallick | 9 years ago BY: Kaushik Mallick
Calculus , Optimization , Mathematics , Numerical Computation , ...
5
REPLIES
7.3K
VIEWS

Visualize simulation using NDSolve for Beddington-DeAngelis model?

QUESTION FROM: Eduardo Mendes | 9 years ago BY: Eduardo Mendes
Equation Solving , Graphics and Visualization , Mathematics , ...
2
REPLIES
4.1K
VIEWS

Fitting (x,y) data to model, with more weight at higher y values

QUESTION FROM: David Kirkby | 9 years ago BY: David Kirkby
Engineering , Modeling , Numerical Computation , Wolfram Language
5
REPLIES
9.3K
VIEWS

How can I speed up this numerical integration?

QUESTION FROM: Ge Yin | 9 years ago
Calculus , Mathematics , Numerical Computation , Wolfram Language
0
REPLIES
2.6K
VIEWS

Solving Nonlinear Differential Equation from 0 to Infinity using Shooting

QUESTION FROM: Raphaela W. | 9 years ago
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
0
REPLIES
3.6K
VIEWS

Is it possible to impose a variable to vanish in NDSolve ?

QUESTION FROM: Thibaut Arnoulx de Pirey | 9 years ago BY: Hans Dolhaine
Equation Solving , Numerical Computation , Physics , Wolfram Language
1
REPLIES
3.9K
VIEWS

Alternatives to NSolve when equation is complicated

QUESTION FROM: Marion Dumas | 9 years ago BY: Gianluca Gorni
Calculus , Equation Solving , Numerical Computation , Wolfram Language
2
REPLIES
5.3K
VIEWS

Numerical integration and the Plot of a function give different results?

QUESTION FROM: Luther Nayhm | 9 years ago BY: Luther Nayhm
Calculus , Graphics and Visualization , Mathematics , ...
4
REPLIES
9.5K
VIEWS

Plot3D shows unexpected output from ParametricNDSolveValue - why?

QUESTION FROM: Steve Bardwell | 9 years ago BY: Steve Bardwell
Equation Solving , Graphics and Visualization , Mathematics , ...
2
REPLIES
3.8K
VIEWS

IntegerPart confusion

QUESTION FROM: Arman S | 9 years ago BY: Sander Huisman
Numerical Computation , Wolfram Language
6
REPLIES
3.4K
VIEWS

Implicit Definition of a Cube -vs- built in Cuboid function

QUESTION FROM: Michael Person | 9 years ago BY: Michael Person
Equation Solving , Geometry , Graphics and Visualization , ...
5
REPLIES
7.1K
VIEWS

Why is FindMinimum running out of memory?

QUESTION FROM: David Keith | 9 years ago BY: Shenghui Yang
Numerical Computation , Wolfram Language
4
REPLIES
5.3K
VIEWS

NDSolve giving an error

QUESTION FROM: François Lepetit | 9 years ago BY: François Lepetit
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
5K
VIEWS

NDSolve PDE with particular variables dependence

QUESTION FROM: andrea n | 9 years ago
Equation Solving , Mathematics , Numerical Computation , ...
0
REPLIES
1.4K
VIEWS

Parametric plot for NDSolve output

QUESTION FROM: Steve Bardwell | 9 years ago BY: Steve Bardwell
Equation Solving , Graphics and Visualization , Mathematics , ...
2
REPLIES
4.6K
VIEWS

Problem adding equations to NDSolve group

QUESTION FROM: Josh Wofford | 9 years ago BY: Bill Simpson
Equation Solving , Mathematics , Numerical Computation , ...
1
REPLIES
5.2K
VIEWS

Finding the actual wind power at a location for a given period?

QUESTION FROM: Daniel Connell | 9 years ago BY: Nicholas Teague
Environmental Science , Mathematics , Numerical Computation , ...
5
REPLIES
24.5K
VIEWS

How to manipulate the initial values (initial conditios) in a ODE system?

QUESTION FROM: Ricardo Sánchez | 9 years ago BY: Ricardo Sánchez
Dynamic Interactivity , Equation Solving , Numerical Computation , ...
2
REPLIES
5.9K
VIEWS

Interpolation for multi-dimensional functions

QUESTION FROM: Rene Samson | 9 years ago BY: Rene Samson
Discrete Mathematics , Mathematics , Numerical Computation , ...
10
REPLIES
19.2K
VIEWS

How do I use NDSolve in Manipulate?

QUESTION FROM: Tim Kirkpatrick | 9 years ago BY: Tim Kirkpatrick
Dynamic Interactivity , Equation Solving , Mathematics , ...
2
REPLIES
7.4K
VIEWS

How do I control the step size of NDSolve at a differential equation?

QUESTION FROM: Dia Ghosh | 9 years ago BY: Dia Ghosh
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
2
REPLIES
6.6K
VIEWS

Can you understand this speed up to NSum?

QUESTION FROM: Marvin Ray Burns A.G.S. (cum laude) | 9 years ago BY: Daniel Lichtblau
Mathematica , Mathematics , Numerical Computation , Wolfram Language
1
REPLIES
5.6K
VIEWS

NDSolve and difference of delays argument for heaviside function?

QUESTION FROM: Zahava Wilstein | 9 years ago
Equation Solving , Mathematics , Numerical Computation , ...
0
REPLIES
3.4K
VIEWS

Can MMA confirm the 'Largest Prime'?

QUESTION FROM: David Mackay | 9 years ago BY: David Mackay
Discrete Mathematics , Mathematics , Numerical Computation
3
REPLIES
7.2K
VIEWS

How to do Cos 48, then Cos 49 and on up to 58 degrees

QUESTION FROM: Jake Trexel | 9 years ago BY: Jake Trexel
Mathematica , Mathematics , Numerical Computation
8
REPLIES
10.4K
VIEWS

Open Office Calc and Excel miscalculation?

QUESTION FROM: PERE PUJOL | 9 years ago BY: Updating Name
External Programs and Systems , Numerical Computation , ...
5
REPLIES
6.4K
VIEWS

Error in NonlinearModelFit with a trig function

QUESTION FROM: syed islam | 9 years ago BY: syed islam
Equation Solving , Optimization , Modeling , Numerical Computation , ...
9
REPLIES
8.2K
VIEWS

Question about numerical integration

QUESTION FROM: Kat Z | 9 years ago BY: Sander Huisman
Calculus , Challenges , Engineering , Equation Solving , ...
1
REPLIES
8.6K
VIEWS

The EulerGamma*Log[2] - Log[2]^2/2 and 5 (Log[Pi] - Log[2]) Problems

QUESTION FROM: Marvin Ray Burns A.G.S. (cum laude) | 9 years ago BY: Marvin Ray Burns A.G.S. (cum laude)
Mathematics , Numerical Computation , Wolfram Language
5
REPLIES
6.9K
VIEWS

Symbolic vector generator

QUESTION FROM: Carlos Felippa | 9 years ago BY: Carlos Felippa
Mathematica , Numerical Computation , Physics
7
REPLIES
8.2K
VIEWS

Finding Happy/Sad Numbers

QUESTION FROM: Anonymous User | 9 years ago BY: Eric Rimbey
Mathematics , Numerical Computation , Wolfram Language
14
REPLIES
9.3K
VIEWS

Shooting method to solve nonlinear ode bvp

QUESTION FROM: faisal basir | 10 years ago BY: faisal basir
Equation Solving , Numerical Computation , Wolfram Language
2
REPLIES
5.4K
VIEWS

Solving for multiple ranges of values

QUESTION FROM: Bryan Lettner | 10 years ago BY: wijnaldum william
Equation Solving , Numerical Computation , Wolfram Language
1
REPLIES
6K
VIEWS

Why doesn't NDSolve StepMonitor return values for derivative term?

QUESTION FROM: David Keith | 10 years ago BY: David Keith
Mathematica , Numerical Computation
2
REPLIES
5K
VIEWS

How to deal with singularity in numerical integration?

QUESTION FROM: Kat Z | 10 years ago BY: Vitaliy Kaurov
Equation Solving , Numerical Computation , Wolfram Language
3
REPLIES
7.7K
VIEWS

EDITED:same computation gives different results

QUESTION FROM: Mike Luntz | 10 years ago BY: Daniel Lichtblau
Numerical Computation , Symbolic Computations , Wolfram Language
7
REPLIES
13.2K
VIEWS

Slow Summation of values produced by recursive function

QUESTION FROM: Tom Zinger | 10 years ago BY: Tom Zinger
Mathematics , Numerical Computation , Tuning and Debugging , ...
13
REPLIES
20K
VIEWS

Numerical PDE solution in spherical coordinates

QUESTION FROM: Michael Person | 10 years ago BY: Gianluca Gorni
Equation Solving , Numerical Computation , Wolfram Language
3
REPLIES
8.1K
VIEWS

Problem solving coupled PDEs with NDSolve

QUESTION FROM: Manu Kalia | 10 years ago BY: Kay Herbert
Equation Solving , Mathematica , Numerical Computation
1
REPLIES
7K
VIEWS

Finding Maximum and Location of Maximum of Function within Limits

QUESTION FROM: Laura McMullen | 10 years ago BY: David Keith
Calculus , Equation Solving , Optimization , Modeling , ...
1
REPLIES
5.9K
VIEWS

PolyLog function evaluation

QUESTION FROM: Hong-Yee Chiu | 10 years ago BY: Hans Dolhaine
Numerical Computation , Wolfram Language
1
REPLIES
4.5K
VIEWS

How does Mathematica's Table function iterate equations?

QUESTION FROM: Matt Bergman | 10 years ago BY: Jonathan Miller
Mathematica , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
17.2K
VIEWS

Intersecting boundary problems when solving PDEs

QUESTION FROM: Marco Thiel | 10 years ago BY: Sergey Slizovskiy
Graphics and Visualization , Mathematica , Mathematics , ...
5
REPLIES
36.6K
VIEWS

FEM: Specify a face for boundary conditions

QUESTION FROM: Michael Person | 10 years ago BY: Vitaliy Kaurov
Calculus , Geometry , Numerical Computation , Packages , ...
2
REPLIES
6.1K
VIEWS

Constructing For loop with If condition with function assign

QUESTION FROM: Updating Name | 10 years ago BY: Nasser M. Abbasi
Mathematica , Mathematics , Numerical Computation
1
REPLIES
5.1K
VIEWS

Function for Greatest Square Free Divisor of an Integer

QUESTION FROM: Steven Clark | 10 years ago BY: Daniel Lichtblau
Mathematics , Numerical Computation , Wolfram Language
3
REPLIES
8.8K
VIEWS

What is the objective function in NonlinearModelFit?

QUESTION FROM: Otto Linsuain | 10 years ago
Data Science , Engineering , Optimization , Numerical Computation , ...
0
REPLIES
4K
VIEWS

Derivation of numerical scheme for linear transport equation on a variable

QUESTION FROM: Oleg Kravchenko | 10 years ago BY: EDITORIAL BOARD
Mathematics , Numerical Computation , Wolfram Language
1
REPLIES
5.9K
VIEWS

Integration method used in NIntegrate

QUESTION FROM: Tomas Rihacek | 10 years ago BY: Anton Antonov
Calculus , Mathematica , Numerical Computation , Wolfram Language
5
REPLIES
13.5K
VIEWS

Computation precision

QUESTION FROM: Stefan Scheiner | 10 years ago BY: Sander Huisman
Numerical Computation , Wolfram Language
2
REPLIES
6.4K
VIEWS

NIntegrate - SymbolicPiecewiseSubdivision

QUESTION FROM: Nathan Woods | 10 years ago
Calculus , Mathematics , Numerical Computation , Wolfram Language
0
REPLIES
3K
VIEWS

How to find all possible paths tracing as many edges between two vertices?

QUESTION FROM: Azhar Uddin Mohammed | 10 years ago BY: Szabolcs Horvát
Civil Engineering , Computer Science , Discrete Mathematics , ...
1
REPLIES
14.1K
VIEWS

Plotting the Exponential Integral

QUESTION FROM: Diego M. Oviedo-Salcedo | 10 years ago BY: Frank Kampas
Calculus , Numerical Computation
1
REPLIES
3.9K
VIEWS

Getting Value from Interpolating Function

QUESTION FROM: Raunak Bardia | 10 years ago BY: David Keith
Calculus , Numerical Computation , Wolfram Language
4
REPLIES
12.8K
VIEWS

how to use the "For" here

QUESTION FROM: YU SHANG | 10 years ago BY: YU SHANG
Data Science , Mathematica , Numerical Computation , Physics , ...
7
REPLIES
14.8K
VIEWS

Simultaneously solving a PDE and ODE

QUESTION FROM: Raunak Bardia | 10 years ago BY: Daniel Lichtblau
Calculus , Discrete Mathematics , Engineering , Mathematica , ...
3
REPLIES
11.4K
VIEWS

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

QUESTION FROM: Bijan Deb | 10 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematica , Optimization , ...
3
REPLIES
9.1K
VIEWS

How do I prevent FindMinimum from calling my function for non-numeric args?

QUESTION FROM: Mikhail Tikhonov | 10 years ago BY: Mikhail Tikhonov
Mathematica , Numerical Computation
1
REPLIES
5.6K
VIEWS

Determine m, n, o, and r along with three parameters (d, s, and w).

QUESTION FROM: Genie Kim | 10 years ago BY: Genie Kim
Calculus , Equation Solving , Optimization , Modeling , ...
2
REPLIES
5.2K
VIEWS

How to Parallelize a Calculation

QUESTION FROM: Deprez Corentin | 10 years ago BY: Sean Clarke
Mathematica , Numerical Computation , Physics
6
REPLIES
12.9K
VIEWS

Repeated interpolation for 3D unstructured grid -> Optimization

QUESTION FROM: Artemiy Shamkin | 10 years ago BY: Artemiy Shamkin
Calculus , Computational Systems , Computer Science , Mathematica , ...
2
REPLIES
15K
VIEWS

Histogram problem

QUESTION FROM: Mikel Antoñana | 10 years ago BY: Sander Huisman
Mathematics , Numerical Computation , Wolfram Language
11
REPLIES
9.8K
VIEWS

A complex number, Replace, Simplifiy, Refine ....

QUESTION FROM: Ahmad Alali | 10 years ago BY: Udo Krause
Algebra , Calculus , Computational Linguistics , Computer Science , ...
5
REPLIES
12K
VIEWS

3D interpolation, memory problem?

QUESTION FROM: Artemiy Shamkin | 10 years ago BY: Sean Clarke
Optimization , Numerical Computation , Wolfram Language
2
REPLIES
6.4K
VIEWS

A look at Liouville's number

QUESTION FROM: Marvin Ray Burns A.G.S. (cum laude) | 10 years ago BY: Daniel Lichtblau
Numerical Computation
7
REPLIES
6K
VIEWS

Error with Numerical Solution of PDE

QUESTION FROM: J FM | 10 years ago BY: Sean Clarke
Numerical Computation
2
REPLIES
3.1K
VIEWS

Second order system with different time scales

QUESTION FROM: Luciano Chaves | 10 years ago BY: Kay Herbert
Calculus , Equation Solving , Numerical Computation , Wolfram Language
10
REPLIES
9.5K
VIEWS

Imperfect Bose gas nonlinear Schroedinger type ODE numerical solution

QUESTION FROM: Mattia Udina | 10 years ago BY: Michael Trott
Calculus , Mathematics , Numerical Computation , Physics , ...
37
REPLIES
17.5K
VIEWS

Who can help me?

QUESTION FROM: Ling Zhengqiu | 10 years ago BY: Mariusz Iwaniuk
Mathematics , Numerical Computation
1
REPLIES
2.8K
VIEWS

Different solutions from the same equations in NDSolve ?

QUESTION FROM: J Jesus Rico-Melgoza | 10 years ago BY: Ulrich Mutze
Calculus , Numerical Computation , Wolfram Language
27
REPLIES
12.1K
VIEWS

Need help to speed up code to find root of determinant

QUESTION FROM: Markus Schmidt | 10 years ago BY: Markus Schmidt
Optimization , Mathematics , Numerical Computation , Wolfram Language
3
REPLIES
12.3K
VIEWS

FindRoot - "only some of the components are equations" error

QUESTION FROM: Anonymous User | 10 years ago BY: Gianluca Gorni
Equation Solving , Numerical Computation , Wolfram Language
1
REPLIES
3.3K
VIEWS

Solving Cubic Splines Symbolically

QUESTION FROM: Brandon Breitling | 10 years ago BY: Alexey Popkov
Calculus , Mathematica , Numerical Computation , Wolfram Language
9
REPLIES
9.8K
VIEWS

Input isn't a differential equation error

QUESTION FROM: Josh Wofford | 10 years ago BY: Josh Wofford
Calculus , Mathematics , Numerical Computation , Wolfram Language
3
REPLIES
6.4K
VIEWS

Using Series for a function with NIntegrate

QUESTION FROM: Ian Berkman | 10 years ago BY: Frank Kampas
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
3
REPLIES
5.5K
VIEWS

How to solve a constraint deferential equations with If function

QUESTION FROM: afshar_saman | 10 years ago BY: Bill Simpson
Calculus , Control Systems , Economics , Equation Solving , ...
1
REPLIES
15.3K
VIEWS

Two warning messages in NIntegrate and NDSolve

QUESTION FROM: Xu Xu | 10 years ago
Equation Solving , Mathematica , Numerical Computation
0
REPLIES
3.8K
VIEWS

Efficient method to cyclically swap items in a list

QUESTION FROM: Paul Cleary | 10 years ago BY: Wiel Aerts
Data Science , Engineering , Mathematica , Optimization , ...
6
REPLIES
10.3K
VIEWS

Can we control the behavior of NonlinearModelFit?

QUESTION FROM: David Keith | 10 years ago BY: David Keith
Numerical Computation
5
REPLIES
10.5K
VIEWS

How to solve a series of linear differential equations

QUESTION FROM: afshar_saman | 10 years ago BY: Bill Simpson
Calculus , Control Systems , Numerical Computation
1
REPLIES
9.5K
VIEWS

FunctionPeriod don't work with PowerModList?

QUESTION FROM: Alexey Podchufarov | 10 years ago BY: Alexey Podchufarov
Calculus , Mathematica , Mathematics , Numerical Computation
2
REPLIES
7.1K
VIEWS

How to get accurate results of InverseCDF function in Mathematica 9?

QUESTION FROM: Otto Linsuain | 10 years ago BY: Otto Linsuain
Numerical Computation , Statistics and Probability
9
REPLIES
7.9K
VIEWS

Rule based command on lists

QUESTION FROM: John Reed | 10 years ago BY: Bill Simpson
Numerical Computation , Physics
2
REPLIES
5.6K
VIEWS

Conditioned UnitStep functions and Minimax/Nash-equilibrum/ZeroSumGame

QUESTION FROM: Steve Meier | 10 years ago
Algebra , Calculus , Mathematica , Optimization , Mathematics , ...
0
REPLIES
4K
VIEWS

Divergence of numerical solution of discontinuous nonllinear ordinary ODE

QUESTION FROM: Zdenek Hurak | 10 years ago BY: Sean Clarke
Equation Solving , Mathematica , Mathematics , Numerical Computation
1
REPLIES
4.5K
VIEWS
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