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Partial and total derivatives, integrals in one or more dimensions, series and limits, differential equations, integral transforms, numerical calculus, discrete calculus...

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NDSolve error: Encountered non-numerical value

QUESTION FROM: Yumin Tian | 1 day ago BY: Gianluca Gorni
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
8
REPLIES
81
VIEWS

I am unable to get my resultant integral to sum to unity

QUESTION FROM: Patrick McMullen | 8 days ago BY: David Trimas
Calculus , Mathematics , Wolfram Language
2
REPLIES
147
VIEWS

Struggling to convert imported formula to function

QUESTION FROM: Patrick McMullen | 8 days ago BY: Patrick McMullen
Calculus , Import and Export , Mathematics , Wolfram Language
5
REPLIES
136
VIEWS

Large integration problem with messy output

QUESTION FROM: Patrick McMullen | 14 days ago BY: Gianluca Gorni
Calculus , Mathematics , Statistics and Probability , Wolfram Language
1
REPLIES
263
VIEWS

Symbolic integration gives wrong result. Is this a bug?

QUESTION FROM: Ralph Trenkler | 15 days ago BY: Michael Rogers
Calculus , Mathematics , Numerical Computation , ...
1
REPLIES
198
VIEWS

Difficult convolution problem: can I ask for a solution in terms of elliptic integrals?

QUESTION FROM: Patrick McMullen | 30 days ago BY: Patrick McMullen
Calculus , Graphics and Visualization , Mathematics , ...
4
REPLIES
375
VIEWS

DSolve v.s. copilot for Coulomb damping

QUESTION FROM: Isao Maruyama | 2 months ago BY: Michael Rogers
Algebra , Calculus , Equation Solving , Mathematics , Wolfram Language
3
REPLIES
292
VIEWS

Can one use WhenEvent to react to NDSolve failures?

QUESTION FROM: Leslaw Bieniasz | 3 months ago BY: Michael Rogers
Calculus , Equation Solving , Numerical Computation , Wolfram Language
1
REPLIES
352
VIEWS

How to obtain an answer of a partial differential equation from a symbolic computation using DSolve

QUESTION FROM: Nomsa Ledwaba | 3 months ago BY: Gianluca Gorni
Calculus , Equation Solving , Mathematics , Symbolic Computations
9
REPLIES
552
VIEWS

Controls in DynamicModule: animation does not start

QUESTION FROM: Christian Mullon | 3 months ago BY: Michael Rogers
Calculus , Dynamic Interactivity , Graphics and Visualization , ...
7
REPLIES
419
VIEWS

Modulo reduction of input for trigonometric functions

QUESTION FROM: Walter Bonin | 3 months ago BY: Walter Bonin
Calculus , Equation Solving , Wolfram|Alpha
33
REPLIES
882
VIEWS

Visualizing derivative logic: chain rule decompositions vs. symbolic solvers

QUESTION FROM: Mian Muhammad ASGHAR | 3 months ago BY: Gianluca Gorni
Calculus , Education , Wolfram|Alpha
5
REPLIES
695
VIEWS

Is the a precision loss due to export/import of numerical values?

QUESTION FROM: Leslaw Bieniasz | 3 months ago BY: Michael Rogers
Algebra , Calculus , Equation Solving , Numerical Computation
4
REPLIES
470
VIEWS

Finding general terms of a series

QUESTION FROM: Somveer Keshav | 3 months ago BY: Gianluca Gorni
Calculus , Symbolic Computations
3
REPLIES
604
VIEWS

Closed-form integration of Slip ODE for anchored FRP–concrete joint with exponential Bond–Slip law

QUESTION FROM: Manish Prasad | 3 months ago BY: Manish Prasad
Calculus , Symbolic Computations
3
REPLIES
447
VIEWS

Unexpected result from evaluating ArcTan

QUESTION FROM: Xiangyang Zhou | 3 months ago BY: Gianluca Gorni
Calculus , Symbolic Computations
3
REPLIES
404
VIEWS

How do you derive the differential volume element in spherical coordinates d(tau) from Cartesian?

QUESTION FROM: Patrick Merrill | 3 months ago BY: Patrick Merrill
Calculus , Mathematics
3
REPLIES
549
VIEWS

How to display the derivative result in the desired form?

QUESTION FROM: Bill Blair | 3 months ago BY: Bill Blair
Calculus , Mathematics , Symbolic Computations
4
REPLIES
549
VIEWS

Residue curves for a reactive ternary system

QUESTION FROM: Housam Binous | 4 months ago
Calculus , Chemistry , Engineering , Graphics and Visualization , ...
0
REPLIES
372
VIEWS

Is there any way to modify the integration domain in course of NDSolve operation?

QUESTION FROM: Leslaw Bieniasz | 4 months ago
Calculus , Equation Solving , Numerical Computation
0
REPLIES
455
VIEWS

What might be the effect of the precision of initial conditions on the precision of ODE solution?

QUESTION FROM: Leslaw Bieniasz | 5 months ago BY: Leslaw Bieniasz
Calculus , Equation Solving
4
REPLIES
820
VIEWS

Wolfram|Alpha expression for the indefinite integral ∫ ln(x+f)/(x+a) dx is not always valid?

QUESTION FROM: Brent Page | 5 months ago BY: Brent Page
Calculus , Mathematics , Wolfram|Alpha
3
REPLIES
1K
VIEWS

Unexpected result in a simple Integral

QUESTION FROM: Reiner Wilhelms | 6 months ago BY: Gianluca Gorni
Calculus , Mathematics , Wolfram Language
1
REPLIES
771
VIEWS

My integral is running slow -- why?

QUESTION FROM: Patrick McMullen | 6 months ago BY: Patrick McMullen
Calculus , Mathematics , Wolfram Language
3
REPLIES
891
VIEWS

Numerical test for divergence/convergence of integrals on (0, $\infty$)

QUESTION FROM: Denis Ivanov | 6 months ago BY: Gianluca Gorni
Calculus , Mathematics , Numerical Computation , ...
1
REPLIES
1K
VIEWS

Using DSolve butFailing to obtain a list of equations expected instead of True in the first argument

QUESTION FROM: Nomsa Ledwaba | 6 months ago BY: Gianluca Gorni
Calculus , Equation Solving , Mathematics , Wolfram Language
6
REPLIES
1.1K
VIEWS

Why does my Mathematica program use 100% CPU but very little RAM and still not finish after hours?

QUESTION FROM: Reza rho | 6 months ago BY: Reza rho
Calculus , Graphics and Visualization , Mathematics , ...
4
REPLIES
1.1K
VIEWS

How to modify this code to correctly analyze the monotonicity of a function over a given interval

QUESTION FROM: Wen Dao | 7 months ago BY: Gianluca Gorni
Calculus , Mathematics , Wolfram Language
1
REPLIES
1.2K
VIEWS

Prefactor for symmetrize to match standard definition of wedge tensors with full antisymmetry

QUESTION FROM: Izhak Manilov | 7 months ago BY: Izhak Manilov
Algebra , Calculus , Mathematics , Wolfram Language
1
REPLIES
1K
VIEWS

Is there a function that predicts local minimums in 0<x<1 for this function?

QUESTION FROM: Jack Fallows | 7 months ago BY: Gianluca Gorni
Calculus , Mathematics , Wolfram Language
2
REPLIES
1.6K
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

Variational iterative method for system fractional DE with Katugampola derivative?

QUESTION FROM: SARIKA SAWANT | 8 months ago BY: Mohammad Bahrami
Calculus , Equation Solving , Mathematics , Wolfram Language
1
REPLIES
1.7K
VIEWS

Integral of Sqrt[1-x^2] appears wrong in Wolfram Alpha

QUESTION FROM: M Bennett | 8 months ago BY: M Bennett
Calculus , Mathematics , Wolfram|Alpha , Wolfram Language
2
REPLIES
2.5K
VIEWS

Determining the condition for a rational expression in k to be constant: coefficient ratio analys

QUESTION FROM: Jim Clinton | 9 months ago BY: Jim Clinton
Calculus , Mathematics , Wolfram Language
4
REPLIES
1.4K
VIEWS

What approach would yield the six integer variables satisfying all given constraints?

QUESTION FROM: Jim Clinton | 9 months ago BY: Updating Name
Calculus
7
REPLIES
2.1K
VIEWS

What is wrong with WhenEvent ?

QUESTION FROM: Mikhail Khenner | 9 months ago BY: Mikhail Khenner
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
3
REPLIES
1.6K
VIEWS

How can I do the derivative of a Hankel function with respect to complex order (nu)?

QUESTION FROM: scintific1 math | 9 months ago BY: scintific1 math
Calculus , Mathematics , Physics , Wolfram Language
9
REPLIES
1.7K
VIEWS

Defining a partial derivative operator with inactive variable

QUESTION FROM: Átila Saraiva Quintela Soares | 9 months ago BY: Gianluca Gorni
Algebra , Calculus , Mathematics , Wolfram Language
1
REPLIES
1K
VIEWS

Using NIntegrate with nested integrals

QUESTION FROM: Max Shpak | 9 months ago BY: Max Shpak
Calculus , Mathematics , Numerical Computation , Wolfram Language
6
REPLIES
1.7K
VIEWS

Calculation of an integral with a variable lower limit using the trapezoidal method

QUESTION FROM: Yaroslav B | 10 months ago BY: Michael Rogers
Calculus , Graphics and Visualization , Physics , Wolfram Language
4
REPLIES
1.5K
VIEWS

Elliptic integrals: built-in vs. explicit integration

QUESTION FROM: Davide Gardini | 10 months ago BY: Gianluca Gorni
Calculus , Mathematics , Numerical Computation , Wolfram Language
5
REPLIES
1.3K
VIEWS

Multiplying very long mathematical expressions

QUESTION FROM: Nomsa Ledwaba | 11 months ago BY: Nomsa Ledwaba
Calculus , Mathematics , Symbolic Computations , Wolfram Language
2
REPLIES
1.7K
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

Partial derivative notation and output

QUESTION FROM: dor gelem | 11 months ago BY: dor gelem
Calculus , Mathematics , Wolfram Language
4
REPLIES
2.4K
VIEWS

How to get nontrivial solution of differential equation (Euler buckling load)?

QUESTION FROM: Ralph Schenn | 11 months ago BY: Ralph Schenn
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
8
REPLIES
2.6K
VIEWS

Is it possible for Canvas to smooth an already drawn path?

QUESTION FROM: Diego Ramos | 11 months ago
Calculus , Graphics and Visualization , Mathematics , Wolfram Language
0
REPLIES
1.1K
VIEWS

DSolve crashes on elementary differential equations

QUESTION FROM: Jean-Michel Charles Collard-Richard | 11 months ago BY: Updating Name
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
2.4K
VIEWS

DSolve not working for given system

QUESTION FROM: maxim knyazev | 11 months ago BY: David Keith
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
2.5K
VIEWS

Cannot plot full OutputResponse

QUESTION FROM: Sai Fisher | 11 months ago BY: Mariusz Iwaniuk
Calculus , Graphics and Visualization , Mathematics , Wolfram Language
1
REPLIES
1.3K
VIEWS

Any way to effectively resolve this integral?

QUESTION FROM: Leslaw Bieniasz | 0 months ago BY: Leslaw Bieniasz
Calculus , Mathematics , Symbolic Computations , Wolfram Language
4
REPLIES
2.3K
VIEWS

Can't solve an integral?

QUESTION FROM: Leslaw Bieniasz | 0 months ago BY: Daniel Lichtblau
Calculus , Wolfram Language
2
REPLIES
1.6K
VIEWS

Input issues perhaps with - ContourIntegrate

QUESTION FROM: Venkat Sastry | 0 months ago
Calculus , Mathematics , Wolfram|Alpha , Wolfram Language
0
REPLIES
1.6K
VIEWS

Request resources for mathematical foundations of higher-order topological dynamics in networks

QUESTION FROM: Amin Cheikhi | 0 months ago BY: Daniel Lichtblau
Algebra , Calculus , Discrete Mathematics , Mathematics , ...
3
REPLIES
2.8K
VIEWS

Do you have 1 simple function that will handle the various types of double integration?

QUESTION FROM: Mary A. Marion | 0 months ago BY: Mary A. Marion
Calculus , Mathematics , Wolfram Language
3
REPLIES
1.6K
VIEWS

Help with optimum initial conditions for electron interaction

QUESTION FROM: Arif Khan | 0 months ago
Calculus , Equation Solving , Graphics and Visualization , ...
0
REPLIES
1.1K
VIEWS

Substitute x in f[x] by a function. Fail to find out how to do that

QUESTION FROM: Christer Gustafsson | 0 months ago BY: Christer Gustafsson
Calculus , Mathematics , Wolfram Language
3
REPLIES
2.1K
VIEWS

SurfaceIntegrate[] and Integrate[] functions giving different divergent theorem flux answers

QUESTION FROM: Mitchell Sandlin | 0 months ago BY: Bruno Tenorio
Calculus , Mathematics , Wolfram Language
1
REPLIES
2.2K
VIEWS

Derivatives are not evaluated when substituted in differential equation

QUESTION FROM: Christer Gustafsson | 0 months ago BY: Christer Gustafsson
Calculus , Mathematics , Symbolic Computations , Wolfram Language
2
REPLIES
1.5K
VIEWS

Simplify x-x is not evaluated to zero

QUESTION FROM: Christer Gustafsson | 0 months ago BY: Christer Gustafsson
Calculus , Mathematics , Symbolic Computations , Wolfram Language
2
REPLIES
1.5K
VIEWS

Possible error in solving Improper integral

QUESTION FROM: José Luis Garrido | 0 months ago BY: Daniel Lichtblau
Calculus , Mathematics , Numerical Computation , Wolfram Language
10
REPLIES
2.2K
VIEWS

Struggling with arbitrary precision in a calculation involving very large and very small numbers

QUESTION FROM: Adam Worthington | 1 year ago BY: Michael Rogers
Calculus , Mathematics , Numerical Computation
1
REPLIES
1.9K
VIEWS

Help with contour integral method for Fox-H function

QUESTION FROM: Veera Venkata Ramana Kandi | 1 year ago BY: Mariusz Iwaniuk
Calculus , Mathematics , Wolfram Language
4
REPLIES
2K
VIEWS

Question on functional derivatives

QUESTION FROM: Yep Led | 1 year ago BY: Gianluca Gorni
Calculus , Mathematics , Wolfram Language
1
REPLIES
1K
VIEWS

Problems with iterative process

QUESTION FROM: Denis Ivanov | 1 year ago BY: Denis Ivanov
Calculus , Mathematics , Numerical Computation , Wolfram Language
3
REPLIES
1.9K
VIEWS

What is the cause of the incorrect substitution?

QUESTION FROM: Sami Heidari | 1 year ago BY: Sami Heidari
Calculus , Mathematics , Symbolic Computations , Wolfram Language
4
REPLIES
1.4K
VIEWS

Discrepancy between LineIntegrate and SurfaceIntegrate results in Stokes’ theorem verification

QUESTION FROM: Antonio Physics_gang | 1 year ago
Calculus , Mathematics , Symbolic Computations , Wolfram Language
0
REPLIES
1.1K
VIEWS

Determining series convergence

QUESTION FROM: Ata Vafi | 1 year ago BY: Ata Vafi
Calculus , Mathematics , Wolfram Language
7
REPLIES
1.9K
VIEWS

Using indices to define the metric and Ricci tensor

QUESTION FROM: Safinaz Salem | 1 year ago
Algebra , Calculus , Mathematics , Symbolic Computations , ...
0
REPLIES
1.6K
VIEWS

Making a substitution in an equation

QUESTION FROM: Sami Heidari | 1 year ago BY: Sami Heidari
Calculus , Mathematics , Wolfram Language
2
REPLIES
1.7K
VIEWS

Wrong frequencies in Periodogram?

QUESTION FROM: Vladimir Ivanov | 1 year ago BY: Henrik Schachner
Calculus , Graphics and Visualization , Mathematics , Wolfram Language
8
REPLIES
2.9K
VIEWS

Calculating multivariable calculus surface integrals using Mathematica

QUESTION FROM: Mitchell Sandlin | 1 year ago BY: Mitchell Sandlin
Calculus , Graphics and Visualization , Mathematics , ...
5
REPLIES
3.5K
VIEWS

Computing Fourier transforms and equivalent integrals

QUESTION FROM: S. Lake | 1 year ago BY: Mariusz Iwaniuk
Calculus , Mathematics , Wolfram|Alpha
4
REPLIES
3K
VIEWS

Solving a 4th- PDE Numerically?

QUESTION FROM: M.A.A Ahmed | 1 year ago
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
0
REPLIES
1.3K
VIEWS

DSolve and DirichletConditions in 2D

QUESTION FROM: Mike T | 1 year ago
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
0
REPLIES
1.1K
VIEWS

Applying the DSolveChangeVariables function

QUESTION FROM: Sinval Santos | 1 year ago
Calculus , Equation Solving , Symbolic Computations , Wolfram Language
0
REPLIES
1.4K
VIEWS

Best solver question?

QUESTION FROM: Jay Gourley | 1 year ago BY: Jay Gourley
Calculus , Equation Solving , Mathematics , ...
4
REPLIES
2.1K
VIEWS

Help debugging code to get computational components

QUESTION FROM: Sandeep Kumar Yadav | 1 year ago BY: Sandeep Kumar Yadav
Calculus , Mathematics , Tuning and Debugging , Wolfram Language
2
REPLIES
2.1K
VIEWS

Superfluous step in W|A step-by-step of implicit differentiation

QUESTION FROM: Aaron Naiman | 1 year ago BY: Aaron Naiman
Calculus , Mathematics , Wolfram|Alpha
6
REPLIES
2K
VIEWS

Is the solution to that integral the rational number presented?

QUESTION FROM: Roberto Alfano | 1 year ago BY: Roberto Alfano
Calculus , Mathematics , Wolfram|Alpha
2
REPLIES
1.4K
VIEWS

Area[] function gives error messages when using a ParametricRegion[] function

QUESTION FROM: Mitchell Sandlin | 1 year ago BY: Eric Rimbey
Calculus , Graphics and Visualization , Mathematics , Wolfram Language
1
REPLIES
2K
VIEWS

Why is Evaluate[ ] needed for D[ ] inside Plot[ ]?

QUESTION FROM: Jay Gourley | 1 year ago BY: Michael Rogers
Calculus , Graphics and Visualization , Wolfram Language
4
REPLIES
2.9K
VIEWS

Analytically solving this system of 2nd order PDEs

QUESTION FROM: Safinaz Salem | 1 year ago BY: Bill Nelson
Calculus , Equation Solving , Graphics and Visualization , ...
1
REPLIES
2.1K
VIEWS

Unexpected result for definite integral with square root

QUESTION FROM: Florian Jausner | 1 year ago BY: Daniel Lichtblau
Calculus , Mathematics , Wolfram Language
2
REPLIES
1.9K
VIEWS

Can Mathematica 12 or 13 handle infinite integrals and summations more efficiently?

QUESTION FROM: Reza rho | 1 year ago BY: Bill Nelson
Calculus , Mathematics , Wolfram Language
2
REPLIES
2.5K
VIEWS

Using LineIntegrate[] along with ImplicitRegion[] to calculate a line integral

QUESTION FROM: Mitchell Sandlin | 1 year ago BY: Mariusz Iwaniuk
Calculus , Mathematics , Wolfram Language
1
REPLIES
2K
VIEWS

Not able to solve partial differential equation

QUESTION FROM: Partha Kumar Paul | 1 year ago BY: EDITORIAL BOARD
Calculus , Equation Solving , Mathematics , Wolfram Language
1
REPLIES
1.2K
VIEWS

Additional term of Log[e] in performing partial derivative

QUESTION FROM: Mitchell Sandlin | 1 year ago BY: Mohammad Bahrami
Calculus , Mathematics , Wolfram Language
1
REPLIES
2.2K
VIEWS

how to get coefficient list from a polynomial with positive and negative powers?

QUESTION FROM: Sami Heidari | 1 year ago BY: Michael Rogers
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
5
REPLIES
2.4K
VIEWS

Unexpected output from DSolve

QUESTION FROM: Sami Heidari | 2 years ago BY: Sami Heidari
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
6
REPLIES
1.8K
VIEWS

Possible error in solving elliptic integral

QUESTION FROM: José Luis Garrido | 2 years ago BY: Mariusz Iwaniuk
Calculus , Mathematics , Numerical Computation , Wolfram Language
1
REPLIES
1.6K
VIEWS

How can get two solution of the ODE with degree two ?

QUESTION FROM: Salim Mahmood | 2 years ago BY: Gianluca Gorni
Calculus , Equation Solving , Mathematics , Physics , ...
3
REPLIES
1.6K
VIEWS

A new algorithm for finding Hirota bilinear form (D-Operator) of NPDE?

QUESTION FROM: Salim Mahmood | 2 years ago BY: Salim Mahmood
Calculus , Equation Solving , Mathematics , Physics , Wolfram Language
4
REPLIES
2.2K
VIEWS

Help in solving a PDE?

QUESTION FROM: Sami Heidari | 2 years ago BY: Gianluca Gorni
Calculus , Equation Solving , Mathematics , Wolfram Language
1
REPLIES
1.4K
VIEWS

Converting from Cartesian into cylindrical coordinates

QUESTION FROM: Mitchell Sandlin | 2 years ago BY: Mitchell Sandlin
Calculus , Geometry , Mathematics , Wolfram Language
2
REPLIES
2.4K
VIEWS

Help with inverse functions

QUESTION FROM: Michele Galasso | 2 years ago BY: Gianluca Gorni
Calculus , Mathematics , Wolfram|Alpha , Wolfram Language
5
REPLIES
1.7K
VIEWS

Considerations for numerically solving a set of differential equation

QUESTION FROM: Mishal Mohanlal | 2 years ago BY: Michael Rogers
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
1
REPLIES
2K
VIEWS

Circular reference in differential equations

QUESTION FROM: Mishal Mohanlal | 2 years ago BY: Michael Rogers
Calculus , Equation Solving , Mathematics , Numerical Computation , ...
3
REPLIES
2.4K
VIEWS

Unable to get my critical points even when I have defined the functions properly?

QUESTION FROM: Antam Gill | 2 years ago BY: Hans Milton
Algebra , Calculus , Equation Solving , Mathematics , Wolfram Language
4
REPLIES
2.7K
VIEWS

What Wolfram products are helpful for learning and tutoring calculus?

QUESTION FROM: Mark Massy | 2 years ago BY: Updating Name
Calculus , Mathematics , Wolfram Language , Wolfram U
6
REPLIES
4.1K
VIEWS

Analytical solution of a system of linear ODEs

QUESTION FROM: Tapas Ray Mahapatra | 2 years ago BY: Michael Rogers
Calculus , Equation Solving , Mathematics , Symbolic Computations , ...
6
REPLIES
2.6K
VIEWS
1
2
3
4
5

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