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plotting
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132/80 answers

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38 Questions

Votes Activity Newest Views
4
9
votes
1
answer
524
views

Issue with the NDSolve code

equation-solving differential-equations numerical-integration
Nov 20 '13 at 3:29 xzczd 44.2k
3
8
votes
1
answer
429
views

How to solve a system of PDEs with zip condition?

differential-equations
Feb 2 '19 at 13:48 xzczd 44.2k
6
8
votes
2
answers
6k
views

How to extract data from a contour plot to a text file?

plotting
Jan 18 '19 at 5:01 Albert 1
1
8
votes
2
answers
356
views

Why does InverseLaplaceTranform give an incorrect solution?

differential-equations bugs integral-transforms
Apr 26 '17 at 6:50 xzczd 44.2k
4
7
votes
1
answer
766
views

Free Convective Heat Transfer of Non-Newtonian Power Law Fluids from a Vertical Plate

differential-equations physics finite-difference-method discontinuity heat-transfer-equation
Apr 9 at 9:58 user21 30.1k
2
7
votes
2
answers
520
views

NDSolve Plotting issue

plotting numerical-integration
Nov 22 '13 at 14:22 Albert Retey 22.3k
1
5
votes
1
answer
259
views

NDSolve::femcmsd: The spatial derivative order of the PDE may not exceed two

differential-equations numerical-integration numerics finite-element-method nonlinear
Nov 4 at 2:07 bbgodfrey 55k
3
5
votes
3
answers
1k
views

How to input Robin boundary conditions for nonstandard Laplace equation?

differential-equations finite-element-method
Jul 10 at 3:17 wuyudi 4,417
 
5
votes
4
answers
576
views

Stiff coupled system of ODE's

differential-equations equation-solving numerical-integration numerics nonlinear
Mar 28 '18 at 4:19 bbgodfrey 55k
 
4
votes
2
answers
384
views

NDSolve::ntdvdae: Cannot solve to find an explicit formula for the derivatives

differential-equations finite-element-method
Oct 2 '19 at 7:36 user21 30.1k
 
3
votes
2
answers
318
views

A system of ODE's with one less initial condition

differential-equations
Oct 27 '16 at 14:02 xzczd 44.2k
 
2
votes
2
answers
107
views

ParametricNDSolveValue::ndsz

differential-equations
Jan 7 at 12:43 bbgodfrey 55k
 
2
votes
2
answers
2k
views

Power::infy: “Infinite expression 1/0. encountered” (ODE Solution using NDSolve)

differential-equations nonlinear boundary-condition-at-infinity
Mar 31 '19 at 15:44 Michael E2 188k
1
2
votes
0
answers
264
views

Solving a coupled PDEs using FEM with Robin conditions

differential-equations finite-element-method
Nov 26 '17 at 4:05 zhk 11.5k
1
2
votes
1
answer
253
views

How to implement the finiteness condition for a PDE?

differential-equations numerical-integration boundary-condition-at-infinity
Sep 20 '17 at 2:21 xzczd 44.2k
 
2
votes
1
answer
107
views

How to find a function from a series with non-numeric coefficients?

series-expansion
Apr 16 '17 at 9:49 zhk 11.5k
1
2
votes
1
answer
280
views

NIntegrate::inumr: “The integrand `E^(-0.9τ1) DiracDelta[t-τ1] v[t-τ1] x[t-τ1]` has evaluated to non-numerical values ”

differential-equations
Oct 14 '15 at 10:13 Mariusz Iwaniuk 9,525
 
1
vote
1
answer
178
views

How to code this iterative process?

equation-solving iteration
Jan 16 at 20:00 Alex Trounev 24.5k
 
1
vote
1
answer
93
views

General::ivar: is not a valid variable [duplicate]

differential-equations evaluation warning-messages
May 30 at 1:00 xzczd 44.2k
3
1
vote
2
answers
387
views

Exporting data from a Plot3D

plotting export
Feb 11 '18 at 12:05 José Antonio Díaz Navas 5,835
 
1
vote
1
answer
264
views

How to validate the solution of a system of integro-differential equations?

differential-equations integral-equations
Apr 6 '17 at 7:03 Community♦ 1
 
1
vote
1
answer
473
views

Equivalent of Maple `ShowSolution` command in *Matematica* [duplicate]

calculus-and-analysis
Jan 18 '17 at 10:55 Community♦ 1
 
1
vote
1
answer
258
views

How to create a data table from an expression which take values from NDSolve?

differential-equations
Dec 30 '16 at 6:42 xzczd 44.2k
 
1
vote
2
answers
4k
views

How can I produce multiple column data for export?

export
Oct 28 '16 at 2:51 Community♦ 1
 
1
vote
2
answers
307
views

PDE plotting assistance needed

numerical-integration
Mar 10 '15 at 19:18 george2079 37.8k
 
1
vote
1
answer
162
views

NDSolve printing error message NDSolve::ndode [closed]

plotting
Mar 1 '15 at 4:14 m_goldberg 104k
 
1
vote
1
answer
146
views

Help with plotting and improving code

plotting differential-equations
Feb 20 '15 at 13:41 m_goldberg 104k
 
0
votes
0
answers
51
views

InitializeBoundaryConditions::fembdnl: The dependent variable in the boundary condition needs to be linear [duplicate]

differential-equations warning-messages finite-element-method
Oct 16 at 11:26 user21 30.1k
2
0
votes
1
answer
114
views

Plotting eigenvalues

differential-equations eigenvalues
Dec 9 '19 at 4:20 Community♦ 1
 
0
votes
1
answer
97
views

Breaks in a LogPlot

plotting differential-equations
Dec 29 '18 at 7:38 Ulrich Neumann 25.1k
1
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