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I am trying to solve those two coupled differential equations analyticaly or numericaly but I only received errors. I will appreciate any help

Asked bymai alrededor de 19 horas ago

Latest activity EditedbyTorsten alrededor de 18 horas ago

Accepted AnswerbyTorsten

Mathematics and Optimization Symbolic Math Toolbox Applications

1

answer

0 votes
22 views

My plot for a photon traveling around a black hole isn't updating.

Asked byKade Johnson on 1 May 2023 at 19:20

Latest activity AnsweredbyConstantino Carlos Reyes-Aldasoro alrededor de 18 horas ago

Sciences Physics Atomic, Molecular & Optical Photonics

1

answer

0 votes
11 views

i keep getting this error when solving for Q1 in ode45. This is my code and the error. Could anyone fix the mistake or show me what is wrong?

Asked byColby on 1 May 2023 at 22:28

Latest activity Commented onbySteven Lord on 1 May 2023 at 23:47

MATLAB Programming

1

answer

0 votes
20 views

我们正在努力解决Q1采用数值和这些基于“增大化现实”技术e my functions and my error that i am giving, is there any help that yall can do?

Asked byColby on 1 May 2023 at 18:54

Latest activity Commented onbyStar Strider on 1 May 2023 at 21:36

AI, Data Science, and Statistics Statistics and Machine Learning Toolbox Probability Distributions Continuous Distributions Gamma Distribution

1

answer

0 votes
18 views

We are trying to use ode45 to solve for function Q1, this is my code and the error that i keep getting. Can i please get some help on what to fix?

Asked byColby on 1 May 2023 at 19:32

Latest activity Commented onbyWalter Roberson on 1 May 2023 at 20:58

MATLAB Programming

1

answer

0 votes
25 views

Error in ode45 : returns a vector of length 8, but the length of initial conditions vector is 6.

Asked bybouchta on 1 May 2023 at 11:35

Latest activity Commented onbyTorsten on 1 May 2023 at 19:59

MATLAB Mathematics Numerical Integration and Differential Equations

1

answer

0 votes
5 views

Unfamiliar error message from ode45: "Unrecognized function or variable 'packageAsFuncHandle".

Asked byBrodie on 1 May 2023 at 11:16

Latest activity Commented onbyBrodieon 1 May 2023 at 19:27

Accepted AnswerbySteven Lord

MATLAB Programming

2

answers

0 votes
5 views

can someone help with this error please

Asked byE.Wolf on 30 Apr 2023 at 18:58

Latest activity EditedbyTorsten on 30 Apr 2023 at 19:38

MATLAB Programming

2

answers

0 votes
31 views

How do I pass inputs into external functions from ode45?

Asked byJoshua on 28 Apr 2023 at 16:52

Latest activity Commented onbyWalter Roberson on 29 Apr 2023 at 22:40

Accepted AnswerbyWalter Roberson

MATLAB Programming

1

answer

0 votes
9 views

How write an event function using a 6x1 state vector.

Asked byCole Zachry on 28 Apr 2023 at 19:28

Latest activity AnsweredbyWalter Roberson on 28 Apr 2023 at 19:35

MATLAB Programming

1

answer

0 votes
28 views

solve the mass spring system where the mass matrix depends explicitly on time

Asked bynado on 12 Apr 2023 at 12:43

Latest activity Commented onbynadoon 28 Apr 2023 at 19:23

Accepted AnswerbyTorsten

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
7 views

I think the ode45 code that I wrote works, but how do I plot it together with both forward and backward euler methods?

Asked byAlvin Sim on 28 Apr 2023 at 8:08

Latest activity AnsweredbyTorsten on 28 Apr 2023 at 13:16

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

0

answers

0 votes
96 views

How to change non scalar variable to scalar variable?

Asked byLight on 21 Apr 2023 at 17:16

Latest activity Commented onbyLighton 24 Apr 2023 at 12:52

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

0

answers

0 votes
44 views

Boundary conditions in ode

Asked byFatemeh on 23 Apr 2023 at 19:14

Latest activity EditedbyTorsten on 23 Apr 2023 at 20:29

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
74 views

Problem with ordinary differential equation

Asked byFatemeh on 22 Apr 2023 at 21:18

Latest activity Commented onbyFatemehon 23 Apr 2023 at 0:37

Accepted AnswerbyStar Strider

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

6

answers

0 votes
38 views

system of linear differential equation with Runge Kutta Method 4 order

Asked byDiksha Gautam on 25 May 2022

Latest activity Commented onbySam Chak on 22 Apr 2023 at 9:17

Accepted AnswerbySam Chak

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

2

answers

0 votes
98 views

Seventh order differential equation

Asked byFrancesco Marchione on 13 Apr 2023 at 18:55

Latest activity EditedbyTorsten on 21 Apr 2023 at 20:35

Accepted AnswerbyTorsten

Mathematics and Optimization Symbolic Math Toolbox Mathematics Equation Solving

1

answer

0 votes
24 views

Issues when stracting from an ODE 45 that depends on a derivative

Asked byMikel on 21 Apr 2023 at 7:45

Latest activity EditedbyTorsten on 21 Apr 2023 at 13:04

Accepted AnswerbyTorsten

MATLAB Programming

1

answer

0 votes
18 views

what's wrong my code about ode model

Asked by기훈 강 on 21 Apr 2023 at 10:18

Latest activity EditedbyTorsten on 21 Apr 2023 at 12:02

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
17 views

error in ode45. I have declared the vector to be 3x1 but it only reads it as 2x1.

Asked byAyush Ranjan on 21 Apr 2023 at 6:41

Latest activity EditedbyStephen23 on 21 Apr 2023 at 7:55

Accepted AnswerbyDyuman Joshi

MATLAB Programming

1

answer

0 votes
22 views

Extracting an intermediate vector from ode45

Asked byMikel on 19 Apr 2023 at 14:14

Latest activity Commented onbyMikelon 21 Apr 2023 at 7:36

Accepted AnswerbyTorsten

MATLAB Programming

1

answer

0 votes
26 views

How to fix ode graphs?

Asked byFatemeh on 20 Apr 2023 at 1:28

Latest activity Commented onbyStar Strider on 20 Apr 2023 at 15:52

Accepted AnswerbyStar Strider

Mathematics and Optimization Symbolic Math Toolbox Graphics

1

answer

0 votes
14 views

I am getting an error in ode45

Asked byAyush Ranjan on 20 Apr 2023 at 13:25

Latest activity AnsweredbyCris LaPierre on 20 Apr 2023 at 13:31

Accepted AnswerbyCris LaPierre

MATLAB Programming

2

answers

0 votes
29 views

ode45 taking too long to solve set of ODEs.

Asked byH on 18 Apr 2023 at 9:37

Latest activity AnsweredbySam Chak on 19 Apr 2023 at 13:55

Signal Processing Signal Processing Toolbox Digital and Analog Filters Digital Filter Analysis

2

answers

0 votes
39 views

Unable to solve stiff differential equation

Asked byAJMIT KUMAR on 17 Apr 2023 at 18:38

Latest activity Commented onbySam Chak on 19 Apr 2023 at 13:21

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
21 views

WHAT would be the reason this matlab code works but does not draw the graphic?

Asked byLaura on 19 Apr 2023 at 9:21

Latest activity AnsweredbyVBBV on 19 Apr 2023 at 9:34

MATLAB Programming

1

answer

0 votes
25 views

Error in ode45

Asked bySusmita Panda on 18 Apr 2023 at 18:42

Latest activity Commented onbySusmita Pandaon 19 Apr 2023 at 5:04

Accepted AnswerbyVBBV

MATLAB Programming

1

answer

0 votes
20 views

initial condition vector longer than ODE vector?

Asked byWill on 18 Apr 2023 at 9:38

Latest activity Commented onbyWillon 18 Apr 2023 at 11:54

Accepted AnswerbyAlan Stevens

MATLAB Programming

1

answer

0 votes
10 views

Index exceeds the number of array elements (1).

Asked byMALLIKARJUNA M on 31 Mar 2023

Latest activity Commented onbyCris LaPierre on 17 Apr 2023 at 20:00

MATLAB Programming

2

answers

0 votes
17 views

Problen with optimization of two parameters, and with differential equations

Asked byJorge Armando Vazquez on 17 Apr 2023 at 18:19

Latest activity EditedbyTorsten on 17 Apr 2023 at 19:17

Mathematics and Optimization Optimization Toolbox Optimization Results Solver Outputs and Iterative Display

0

answers

0 votes
25 views

Sytem of ODE with time varying coefficients in a csv file

Asked byAtharva Bhomle on 16 Apr 2023 at 8:16

Latest activity Commented onbyTorsten on 16 Apr 2023 at 13:24

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

0

answers

0 votes
20 views

Unregconized function or variable 'x' when solving ODE, i need to solve n1 to n9 with this code, may I know how to? Thanks so much.

Asked byViggy Tan on 16 Apr 2023 at 6:52

Latest activity Commented onbyTorsten on 16 Apr 2023 at 13:04

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
21 views

ode45 how to write differential equation (within function) that incorporates itself at previous time stamp

Asked byGrace on 14 Apr 2023 at 17:55

Latest activity Commented onbyJames Tursa on 15 Apr 2023 at 0:29

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
20 views

Ode45 calling a matrix and an array in a function

Asked byAlex Belew on 14 Apr 2023 at 12:46

Latest activity EditedbyTorsten on 14 Apr 2023 at 17:00

Accepted AnswerbyTorsten

MATLAB Programming

0

answers

0 votes
34 views

how can I dissect a ode in 3 parts ! lets say I am starting from [0 t1] then stop the ode add a value to a parameter again start the ode[ t1 t2 ]then again change it back ?

Asked bySOUVIK DARIPA on 13 Apr 2023 at 14:02

Latest activity Commented onbyTorsten on 14 Apr 2023 at 13:11

MATLAB Programming

2

answers

0 votes
44 views

how to fix error message Invalid expression as When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

Asked byRITIKA Jaiswal on 13 Apr 2023 at 12:22

Latest activity Commented onbyRITIKA Jaiswalon 13 Apr 2023 at 22:36

Accepted AnswerbyCris LaPierre

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
40 views

How can I integrate symbolically a coupled vector function?

Asked byJXT119 on 13 Apr 2023 at 5:01

Latest activity Commented onbyWalter Roberson on 13 Apr 2023 at 19:48

Mathematics and Optimization Symbolic Math Toolbox Mathematics Calculus

1

answer

0 votes
34 views

ODE simulation: issue with the size of arrays

Asked byAlessandro Bellocchi on 13 Apr 2023 at 7:47

Latest activity EditedbyDavide Masiello on 13 Apr 2023 at 11:07

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

0

answers

0 votes
16 views

Using ode45 on conditioned equations

Asked byAlex B on 12 Apr 2023 at 20:51

Latest activity Commented onbyTorsten on 13 Apr 2023 at 1:06

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
94 views

When using ode45, have Error using odeget Unrecognized property name 'NonNegative'. See ODESET for possibilities.

Asked byYing Liu on 11 Apr 2023 at 0:58

Latest activity Commented onbyYing Liuon 12 Apr 2023 at 21:48

Accepted AnswerbyWalter Roberson

Physical Modeling Simscape Multibody Multibody Modeling Assembly

3

answers

0 votes
40 views

Error in using ode45 for solution of nonlinear system of three equations which are interlinked to each other

Asked byFAIZ UL HASSAN on 12 Apr 2023 at 14:18

Latest activity Commented onbyFAIZ UL HASSANon 12 Apr 2023 at 16:08

MATLAB Programming

1

answer

0 votes
11 views

Solve time-dependent ODE using the result from another time-dependent ODE

Asked byMingze Yin on 10 Dec 2021

Latest activity Commented onbyPavitra Vaishalion 12 Apr 2023 at 5:17

Accepted AnswerbyTorsten

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

1

answer

0 votes
37 views

Error using mupadengine/feval_internal

Asked byFatemeh on 11 Apr 2023 at 17:55

Latest activity Commented onbyWalter Roberson on 11 Apr 2023 at 18:53

Accepted AnswerbyWalter Roberson

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

2

answers

0 votes
48 views

How can I pass a large function into ODE45?

Asked byMG_2002 on 9 Apr 2023 at 20:49

Latest activity Commented onbyWalter Roberson on 10 Apr 2023 at 18:26

Accepted AnswerbyWalter Roberson

MATLAB Programming

2

answers

0 votes
51 views

How to solve the error while solving the given equation by ode45 or ode15s?

Asked byRITIKA Jaiswal on 9 Apr 2023 at 10:01

Latest activity EditedbyVBBV on 9 Apr 2023 at 22:51

MATLAB Programming

0

answers

0 votes
18 views

I want to solve ODEs using ODE45 resulted from Finite Volume Method. But I am getting error in the code. Kindly help to rectify the error.

Asked bysanjeev kumar jha on 9 Apr 2023 at 10:32

Latest activity Commented onbyTorsten on 9 Apr 2023 at 15:01

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

2

answers

1 vote
92 views

How to solve systems of non linear partial differential equations using finite difference method?

Asked byRITIKA Jaiswal on 3 Oct 2022

Latest activity Commented onbyRITIKA Jaiswalon 9 Apr 2023 at 3:19

Mathematics and Optimization Partial Differential Equation Toolbox General PDEs Boundary Conditions

1

answer

0 votes
13 views

Why does my ode45 function not run?

Asked bySneh on 7 Apr 2023 at 8:34

Latest activity AnsweredbySam Chak on 7 Apr 2023 at 9:00

Mathematics and Optimization

1

answer

0 votes
29 views

How to use ODE45 for a coupled system of differential equations at a specific time point

Asked byAli Almakhmari on 6 Apr 2023 at 10:05

Latest activity Commented onbyJon on 6 Apr 2023 at 14:51

Accepted AnswerbyJon

MATLAB Programming

0

answers

0 votes
46 views

How to solve a system of 1st order ODEs of size 4375 resulted from Finite Volume Method ?

Asked bysanjeev kumar jha on 4 Apr 2023 at 7:38

Latest activity Commented onbysanjeev kumar jha2023年4月6日12:03

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

Results 1 - 50 of 3.947