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

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Help solving system of 3 differential equations?

QUESTION FROM: Diogo Carvalho | 4 years ago BY: xzczd 　
Calculus , Equation Solving , Numerical Computation , Wolfram Language
4
REPLIES
6.5K
VIEWS

Error deqn using NDSolve?

QUESTION FROM: Cao Bb | 4 years ago BY: Cao Bb
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
4.8K
VIEWS

Need more help on code for identity involving the Meijer G .

QUESTION FROM: Marvin Ray Burns A.G.S. (cum laude) | 4 years ago BY: Marvin Ray Burns A.G.S. (cum laude)
Calculus , Computer-Based Maths , Mathematics , ...
4
REPLIES
6.1K
VIEWS

Mathematica v12.3.0 has detected an internal error

QUESTION FROM: Apocalypse infinity | 4 years ago BY: Apocalypse infinity
Calculus , Optimization , Mathematics , Numerical Computation , ...
4
REPLIES
5.8K
VIEWS

Error Solving numerical integral

QUESTION FROM: Bell Na | 4 years ago BY: Gianluca Gorni
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
3.1K
VIEWS

Putting all extrema of an NDSolve output into a single list?

QUESTION FROM: Alex L | 4 years ago BY: Alex L
Calculus , Equation Solving , Numerical Computation , Wolfram Language
4
REPLIES
4.2K
VIEWS

Plotting a numerical integral?

QUESTION FROM: Alex L | 4 years ago BY: Alex L
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
4.1K
VIEWS

How to sovle the second order ODE numerically？

QUESTION FROM: Daniel Niu | 4 years ago BY: Mariusz Iwaniuk
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
4.4K
VIEWS

PDE solution using NDSolve not smooth

QUESTION FROM: srinivas.gk | 4 years ago BY: Updating Name
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
4.9K
VIEWS

How to extend the code to a system with delay?

QUESTION FROM: vijayalakshmi palanisamy | 4 years ago BY: EDITORIAL BOARD
Calculus , Equation Solving , Numerical Computation , Wolfram Language
4
REPLIES
3.7K
VIEWS

Numeric Precision in Scientific Calculation

QUESTION FROM: Neil Parker | 4 years ago BY: Neil Parker
Numerical Computation , Physics , Wolfram Language
4
REPLIES
3.4K
VIEWS

NDSolve error for a system of coupled differential equations

QUESTION FROM: Akshay S | 4 years ago BY: Akshay S
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
3.3K
VIEWS

Why are minimum and maximum numbers fixed?

QUESTION FROM: Leslaw Bieniasz | 4 years ago BY: Leslaw Bieniasz
Numerical Computation , Wolfram Language
4
REPLIES
4.7K
VIEWS

Get NDSolve to not crash while solving a pde?

QUESTION FROM: Praveen Kumar | 4 years ago BY: Praveen Kumar
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
5.2K
VIEWS

Extracting data from plot of NDSolve[ ] output

QUESTION FROM: KRISHAN SHARMA | 5 years ago BY: KRISHAN SHARMA
Calculus , Equation Solving , Graphics and Visualization , ...
4
REPLIES
5.6K
VIEWS

[Solved] Plot of a numerical integration

QUESTION FROM: Ram Sen | 5 years ago BY: Ram Sen
Calculus , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
4.3K
VIEWS

How to numerical solve equation with 3x-integrals

QUESTION FROM: Toibjon Abdurahmonov | 5 years ago BY: Anonymous User
Algebra , Calculus , Equation Solving , Mathematics , ...
4
REPLIES
4.3K
VIEWS

Find error in "NDsolve"

QUESTION FROM: Lina Lili | 5 years ago BY: Hans Dolhaine
Control Systems , Equation Solving , Mathematics , ...
4
REPLIES
6.7K
VIEWS

Overflow in Sum?

QUESTION FROM: Daniel Huber | 5 years ago BY: Mike Besso
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
5.4K
VIEWS

Are there any alternatives for Piecewise?

QUESTION FROM: Quim iguaz | 5 years ago BY: Quim iguaz
Equation Solving , Mathematics , Numerical Computation , Physics , ...
4
REPLIES
6.8K
VIEWS

Summing infinite series causes Mathematica to stop running

QUESTION FROM: Peter Kacensky | 5 years ago BY: Peter Kacensky
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
4.5K
VIEWS

Find all paths in a graph when removing one node of the graph at a time

QUESTION FROM: Besmir Tola | 5 years ago BY: Bill Nelson
Calculus , Computer Science , Data Science , Engineering , ...
4
REPLIES
6.6K
VIEWS

NSolve with conditions on complex solutions

QUESTION FROM: Mariam Tohari | 5 years ago BY: Mariam Tohari
Equation Solving , Mathematics , Numerical Computation , Optics , ...
4
REPLIES
7K
VIEWS

Convert a piecewise integer function into usable form such as a List?

QUESTION FROM: Douglas Kubler | 5 years ago BY: Douglas Kubler
Discrete Mathematics , Mathematics , Numerical Computation , ...
4
REPLIES
6.4K
VIEWS

Fit data by combination of functions, solutions of differential eq.

QUESTION FROM: Hélène PASQUIER | 5 years ago BY: Hélène PASQUIER
Calculus , Chemistry , Equation Solving , Mathematics , ...
4
REPLIES
7.4K
VIEWS

[?] Fit noisy data as a Least squares problem?

QUESTION FROM: Lorenzo Fuggiano | 5 years ago BY: Martijn Froeling
Optimization , Modeling , Numerical Computation , Signal Processing , ...
4
REPLIES
8.1K
VIEWS

Optimizing code that numerically evaluates line integrals on Mesh/Grid

QUESTION FROM: Tharindu W Fernando | 5 years ago BY: Tharindu W Fernando
Graphics and Visualization , High-Performance Computing , ...
4
REPLIES
6.5K
VIEWS

[?] Avoid issue with message that "symbol does not have immediate value"?

QUESTION FROM: Fred Kuttner | 5 years ago BY: Fred Kuttner
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
6.1K
VIEWS

Use Round in NIntegrate?

QUESTION FROM: Jiatianfu Qu | 6 years ago BY: Jiatianfu Qu
Calculus , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
4.6K
VIEWS

Issues on the following numerical integration?

QUESTION FROM: Mike Luntz | 6 years ago BY: Mike Luntz
Mathematics , Numerical Computation , Packages , Wolfram Language
4
REPLIES
8.6K
VIEWS

Perform a numerical integration using trapezoid method?

QUESTION FROM: Nio Totté | 6 years ago BY: Nio Totté
Calculus , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
4.4K
VIEWS

Solve PDE with boundary and initial conditions?

QUESTION FROM: C H | 6 years ago BY: Neil Singer
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
3.8K
VIEWS

Create a table containing the numerical results of FindRoot?

QUESTION FROM: Imre Pazsit | 6 years ago BY: Imre Pazsit
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
7.8K
VIEWS

Avoid machine precision issues while using FindRoot?

QUESTION FROM: Muhammad Atif Masoud | 6 years ago BY: Daniel Lichtblau
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
5.9K
VIEWS

Use results of NDSolve for other computations?

QUESTION FROM: Daniel Gotsmann | 7 years ago BY: EDITORIAL BOARD
Calculus , Equation Solving , Graphics and Visualization , ...
4
REPLIES
4.8K
VIEWS

Solve a PDE by using NDSolve?

QUESTION FROM: Mirza Farrukh Baig | 7 years ago BY: Mirza Farrukh Baig
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
6.1K
VIEWS

Would anyone like to test my package for crystallography?

QUESTION FROM: Stian Ramsnes | 7 years ago BY: Stian Ramsnes
Chemistry , Material Sciences , Mathematica , Numerical Computation , ...
4
REPLIES
9.9K
VIEWS

Explain behavior of N function displayed precision?

QUESTION FROM: Albert Cattani | 7 years ago BY: Albert Cattani
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
5K
VIEWS

Integrate a function in a region around the origin with a singularity?

QUESTION FROM: Miguel Condesso | 7 years ago BY: Miguel Condesso
Calculus , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
6K
VIEWS

Plot the result of NDSolve as a RectangleChart3D?

QUESTION FROM: Salman Zaffar | 7 years ago BY: Dent de Lion
Dynamic Interactivity , Equation Solving , ...
4
REPLIES
7.8K
VIEWS

Tsunamis Program on Page 129, Mathematics Beyond Mathematica

QUESTION FROM: Samuel Kohn | 7 years ago BY: Samuel Kohn
Calculus , Dynamic Interactivity , Equation Solving , ...
4
REPLIES
6.3K
VIEWS

Get an accurate answer by using the ''NIntegrate''?

QUESTION FROM: zy dong | 7 years ago BY: zy dong
Calculus , Optimization , Mathematics , Numerical Computation , ...
4
REPLIES
5.4K
VIEWS

[?] Use NDSolve for a third-order differential PDE?

QUESTION FROM: Ser Man | 7 years ago BY: Ser Man
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
5.1K
VIEWS

Get a more precise number of this formula with W|A?

QUESTION FROM: Michael Przybylski | 7 years ago BY: Michael Przybylski
Mathematics , Numerical Computation , Physics , Wolfram|Alpha
4
REPLIES
7.1K
VIEWS

[?] Get 1,000,000 digits of e^(-Pi/2) without running out of memory?

QUESTION FROM: Douglas Marsh | 7 years ago BY: Hans Michel
Mathematica , Mathematics , Numerical Computation
4
REPLIES
8K
VIEWS

[?] Control the precision of the result with FindMinimum?

QUESTION FROM: Joao Porto | 7 years ago BY: Michael Rogers
Optimization , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
8.7K
VIEWS

Improve this relatively simple FindRoot code?

QUESTION FROM: Todor Latev | 7 years ago BY: Michael Rogers
Algebra , Calculus , Equation Solving , Mathematics , ...
4
REPLIES
8.3K
VIEWS

[?] Use CompositeQ[x]?

QUESTION FROM: Patrick Cesarano | 7 years ago BY: Ilian Gachevski
Mathematica , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
5.4K
VIEWS

[?] Get table and List plot for different range of values?

QUESTION FROM: Mujtaba Mozumder | 7 years ago BY: Mujtaba Mozumder
Graphics and Visualization , Mathematics , Numerical Computation , ...
4
REPLIES
4.6K
VIEWS

[?]  First passage time distribution with moving boundary

QUESTION FROM: Anonym Anonymous | 8 years ago BY: Anonym Anonymous
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
3.6K
VIEWS

Solve a system of DAEs with discrete conditions using NDSolve?

QUESTION FROM: Foad Sojoodi Farimani | 8 years ago BY: Neil Singer
Discrete Mathematics , Engineering , Equation Solving , Mathematics , ...
4
REPLIES
7.7K
VIEWS

[?] Compute a triple integral with NIntegrate?

QUESTION FROM: Xing Shi Cai | 8 years ago BY: Michael Rogers
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
9.1K
VIEWS

Compare a 3D shape measurement with a numerical model?

QUESTION FROM: Maarten van der Burgt | 8 years ago BY: Maarten van der Burgt
Data Science , External Programs and Systems , Geometry , ...
4
REPLIES
7.7K
VIEWS

[?]Avoid "NDSolve::overdet: There are fewer dependent variables, ..."error?

QUESTION FROM: tarik balci | 8 years ago BY: tarik balci
Equation Solving , Mathematics , Modeling , Numerical Computation , ...
4
REPLIES
9.7K
VIEWS

Improve speed to obtain numerical values of Bessel function?

QUESTION FROM: Markus Schmidt | 8 years ago BY: Markus Schmidt
Compilation , Discrete Mathematics , High-Performance Computing , ...
4
REPLIES
12K
VIEWS

[?] Resolve singularity in ODE under DSolve?

QUESTION FROM: Kai D | 8 years ago BY: Kai D
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
4.4K
VIEWS

[?] Break a time consuming integration into pieces?

QUESTION FROM: Shahrooz Aghili | 8 years ago BY: Neil Singer
Calculus , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
5.7K
VIEWS

[?] Solve a Black-Scholes PDE?

QUESTION FROM: Ryan McKeon | 8 years ago BY: Ryan McKeon
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
5.4K
VIEWS

Find fit parameters which will fit experimental data using a Hamiltonian?

QUESTION FROM: Robert Poenaru | 8 years ago BY: Frank Kampas
Optimization , Mathematics , Numerical Computation , Physics , ...
4
REPLIES
10.9K
VIEWS

Speed up the evaluating of a function?

QUESTION FROM: Alessio Lapolla | 8 years ago BY: Alessio Lapolla
Mathematics , Numerical Computation , Tuning and Debugging , ...
4
REPLIES
9.9K
VIEWS

Run this integral code faster?

QUESTION FROM: Yonggang Luo | 8 years ago BY: Yonggang Luo
Algebra , Calculus , Mathematics , Numerical Computation , ...
4
REPLIES
5.8K
VIEWS

Create charts or animation of a Pursuit Curve?

QUESTION FROM: pawel kowalski | 8 years ago BY: pawel kowalski
Calculus , Demonstrations , Equation Solving , ...
4
REPLIES
11.8K
VIEWS

Avoid overflow for pandigital Sabey formula for calculation of e?

QUESTION FROM: Aeyoss Antelope | 8 years ago BY: Daniel Lichtblau
Mathematics , Numerical Computation , Recreation , Wolfram Language
4
REPLIES
8.9K
VIEWS

Best NDSolve Methods for this equation?

QUESTION FROM: Fernando Garcia | 9 years ago BY: Fernando Garcia
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
8.5K
VIEWS

Solve problem with a particular initial condition using NDSolve?

QUESTION FROM: Homer Chiou | 9 years ago BY: Homer Chiou
Calculus , Equation Solving , Mathematics , Mechanical Engineering , ...
4
REPLIES
10.1K
VIEWS

Plotting RealExponent with respect to delay?

QUESTION FROM: Dia Ghosh | 9 years ago BY: Sander Huisman
Equation Solving , Graphics and Visualization , Mathematics , ...
4
REPLIES
5.1K
VIEWS

Plot and numerically integrate a function?

QUESTION FROM: Alessio Lapolla | 9 years ago BY: Alessio Lapolla
Graphics and Visualization , Mathematics , Numerical Computation , ...
4
REPLIES
8.5K
VIEWS

Numerical calcuations slow down unexpectedly

QUESTION FROM: H. H. | 9 years ago BY: H. H.
Mathematica , Optimization , Numerical Computation , Wolfram Language
4
REPLIES
6.5K
VIEWS

Apply conditions on the solution of this trigonometric system?

QUESTION FROM: Muhammad Afzal | 9 years ago BY: Gianluca Gorni
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
9.6K
VIEWS

Difference between N[1/3, 2] -vs- N[1./3., 2]?

QUESTION FROM: Flavio Sartoretto | 9 years ago BY: Flavio Sartoretto
Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
5.5K
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
6.2K
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
5.9K
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
9.4K
VIEWS

Why is FindMinimum running out of memory?

QUESTION FROM: David Keith | 9 years ago BY: Shenghui Yang
Numerical Computation , Wolfram Language
4
REPLIES
5.2K
VIEWS

NDSolve giving an error

QUESTION FROM: François Lepetit | 9 years ago BY: François Lepetit
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
4.9K
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
17K
VIEWS

Getting Value from Interpolating Function

QUESTION FROM: Raunak Bardia | 10 years ago BY: David Keith
Calculus , Numerical Computation , Wolfram Language
4
REPLIES
12.7K
VIEWS

Can you find the PseudoInverse of this matrix?

QUESTION FROM: Douglas Youvan | 10 years ago BY: Frank Kampas
Algebra , Discrete Mathematics , Equation Solving , ...
4
REPLIES
9K
VIEWS

Problem: Calibration of the Duffie Pan and Singleton Model (2000)

QUESTION FROM: philipp.la | 10 years ago BY: philipp.la
Business Analytics , Mathematica , Optimization , ...
4
REPLIES
13.4K
VIEWS

Could you please help me to solve this partial differential equation ?

QUESTION FROM: sanaz ka | 10 years ago BY: sanaz ka
Algebra , Calculus , Equation Solving , Numerical Computation , ...
4
REPLIES
5.5K
VIEWS

Please let me know why Mathematica gives error message!

QUESTION FROM: Changsoo Lee | 10 years ago BY: Changsoo Lee
Equation Solving , Numerical Computation , Wolfram Language
4
REPLIES
6.8K
VIEWS

Can Mathematica modify lightly the inital conditions of NDSolve??

QUESTION FROM: Arnau Jim | 10 years ago BY: Frank Kampas
Calculus , Equation Solving , Mathematica , Numerical Computation , ...
4
REPLIES
6.6K
VIEWS

Loop Construction

QUESTION FROM: selahittin cinar | 10 years ago BY: Jim Baldwin
Algebra , Mathematica , Numerical Computation , Wolfram Language
4
REPLIES
8K
VIEWS

WhenEvent issue with vector valued diffeq

QUESTION FROM: David Keith | 11 years ago BY: David Keith
Calculus , Equation Solving , Mathematica , Numerical Computation , ...
4
REPLIES
8.3K
VIEWS

How to use NMinimize on a mesh?

QUESTION FROM: Jonatan Lehtonen | 11 years ago BY: Ilian Gachevski
Geometry , Graphics and Visualization , Mathematica , ...
4
REPLIES
125K
VIEWS

Define a complex number

QUESTION FROM: Ahmed Al-Ali | 11 years ago BY: Ulrich Mutze
Algebra , Calculus , Compilation , Logic and Boolean Algebra , ...
4
REPLIES
15.1K
VIEWS

How can I gather the results of several computations of a notebook?

QUESTION FROM: Vladimir Korukov | 11 years ago BY: Vladimir Korukov
Mathematica , Mathematics , Numerical Computation , Wolfram Language
4
REPLIES
4K
VIEWS

Why I am getting Abs' when I am doing derivative over a complex function?

QUESTION FROM: Ali Mousavian | 11 years ago BY: David Reiss
Numerical Computation
4
REPLIES
19.5K
VIEWS

How do I solve a profile interval (statistics)

QUESTION FROM: Casper YC | 11 years ago BY: Casper YC
Equation Solving , Mathematics , Numerical Computation , ...
4
REPLIES
6.6K
VIEWS

Gauss iteration method-nestlist-stopping criteria

QUESTION FROM: selahittin cinar | 11 years ago BY: Daniel Lichtblau
Mathematica , Mathematics , Numerical Computation
4
REPLIES
4.8K
VIEWS

ListInterpolation help?

QUESTION FROM: Paul Reiser | 11 years ago BY: Paul Reiser
Data Science , Mathematica , Numerical Computation , Wolfram Language
4
REPLIES
7K
VIEWS

No tools for Convex Optimization in Mathematica??

QUESTION FROM: Raffaele Santagati | 11 years ago BY: Frank Kampas
Mathematica , Optimization , Numerical Computation , Wolfram Language
4
REPLIES
10.8K
VIEWS

Integration along BSpline

QUESTION FROM: Christopher Purcell | 11 years ago BY: Christopher Purcell
Calculus , Mathematica , Mathematics , Numerical Computation
4
REPLIES
6.7K
VIEWS

Optimal exponential smoothing: Why is NMinimize so slow?

QUESTION FROM: Michael Puhle | 11 years ago BY: Michael Puhle
Mathematica , Optimization , Numerical Computation , ...
4
REPLIES
8.2K
VIEWS

Finite Elements: how to impose periodic boundary conditions

QUESTION FROM: Mauricio Lobos | 11 years ago BY: Marco Thiel
Mechanical Engineering , Numerical Computation
4
REPLIES
9.2K
VIEWS

Find k point that minimize the variance between the items in a numeric set

QUESTION FROM: david Bernard | 11 years ago BY: Daniel Lichtblau
Mathematica , Optimization , Numerical Computation , Wolfram Language
4
REPLIES
3.6K
VIEWS

NIntegrate returned complex value for non-complex integrand

QUESTION FROM: Denis Petukhov | 11 years ago BY: Sean Clarke
Calculus , Mathematica , Numerical Computation , Wolfram Language
4
REPLIES
6.1K
VIEWS

How to get more points?

QUESTION FROM: Mitja Jan?i? | 11 years ago BY: Christopher French
Mathematica , Numerical Computation , Wolfram Language
4
REPLIES
5.2K
VIEWS

Issue with Solve. Transition from Mathematica 9 to 10

QUESTION FROM: D PrEs | 11 years ago BY: Bruce Miller
Equation Solving , Mathematica , Numerical Computation , ...
4
REPLIES
4.9K
VIEWS

Limiting the output from an NSolve problem to Reals

QUESTION FROM: Doug Stoll | 11 years ago BY: Doug Stoll
Algebra , Mathematica , Numerical Computation , Wolfram Language
4
REPLIES
4.8K
VIEWS
3
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