User zhk

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9

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1

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524

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Issue with the NDSolve code

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429

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differential-equations

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6k

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

plotting

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8

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2

answers

356

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Why does InverseLaplaceTranform give an incorrect solution?

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Apr 26 '17 at 6:50 xzczd 44.2k

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7

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766

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

differential-equations physics finite-difference-method discontinuity heat-transfer-equation

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520

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NDSolve Plotting issue

plotting numerical-integration

Nov 22 '13 at 14:22 Albert Retey 22.3k

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5

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1

answer

259

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

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differential-equations finite-element-method

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Stiff coupled system of ODE's

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2

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383

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differential-equations finite-element-method

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318

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differential-equations

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2

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2

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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

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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

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1

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253

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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

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1

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

series-expansion

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2

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1

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280

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

differential-equations

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1

vote

1

answer

175

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How to code this iterative process?

equation-solving iteration

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1

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1

answer

93

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

differential-equations evaluation warning-messages

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3

1

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2

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387

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plotting export

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1

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1

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264

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

differential-equations integral-equations

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1

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1

answer

472

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

calculus-and-analysis

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1

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258

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differential-equations

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2

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export

Oct 28 '16 at 2:51 Community♦ 1

1

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2

answers

307

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PDE plotting assistance needed

numerical-integration

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1

vote

1

answer

162

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NDSolve printing error message NDSolve::ndode [closed]

plotting

Mar 1 '15 at 4:14 m_goldberg 104k

1

vote

1

answer

146

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Help with plotting and improving code

plotting differential-equations

Feb 20 '15 at 13:41 m_goldberg 104k

0

votes

0

answers

51

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

differential-equations warning-messages finite-element-method

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1

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114

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Plotting eigenvalues

differential-equations eigenvalues

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0

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1

answer

97

views

Breaks in a LogPlot

plotting differential-equations

Dec 29 '18 at 7:38 Ulrich Neumann 25.1k

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38 Questions

Issue with the NDSolve code

How to solve a system of PDEs with zip condition?

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

Why does InverseLaplaceTranform give an incorrect solution?

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

NDSolve Plotting issue

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

How to input Robin boundary conditions for nonstandard Laplace equation?

Stiff coupled system of ODE's

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

A system of ODE's with one less initial condition

ParametricNDSolveValue::ndsz

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

Solving a coupled PDEs using FEM with Robin conditions

How to implement the finiteness condition for a PDE?

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

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

How to code this iterative process?

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

Exporting data from a Plot3D

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

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

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

How can I produce multiple column data for export?

PDE plotting assistance needed

NDSolve printing error message NDSolve::ndode [closed]

Help with plotting and improving code

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

Plotting eigenvalues

Breaks in a LogPlot