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**Content Feed**

Question

Two basic questions in matlab

Hello all, I used matlab for some time, but this did not made me thorough with basics. 1. If I have two matrices, I1 3x3 an...

8 years ago | 1 answer | 0

### 1

answerQuestion

Problems with matlab symbolic dsolve function

Hi I feel that something is going wrong with matlab dsolve function. Here is simple code: syms y x dsolve('9*D2y+y=x*...

8 years ago | 2 answers | 0

### 2

answersQuestion

how to define a variable as a function of another variable in symbolic toolbox

Hi I am just wondering whether is it possible to do following: define a variable as a function of x u=f(x) Then, ...

8 years ago | 1 answer | 0

### 1

answerQuestion

Errors in using string and vector together

Hi I want to display string and vector of floating point numbers together, but matlab flags error - 'dimensions of matrices are...

8 years ago | 1 answer | 0

### 1

answerQuestion

Error in simple ode45 functions

Hello, I am trying to solve a non-stiff 2nd order ODE with ode45 function. My ODE is d^2y/dt^2 = -g + (4/15)*(1/m)*(dy/dt)^2 ...

8 years ago | 1 answer | 0

### 1

answerQuestion

Best MATLAB-like C++ numerical libraries ?

Hi all, MATLAB makes linear algebra and matrix operations very easy and it is causing me pain to work in C++ ! I started with C...

8 years ago | 2 answers | 0

### 2

answersQuestion

How to use multi-part function to find Fourier series coefficients with this program?

Hi I am writing a script to find Fourier series coefficients. Code is given below. In the code, I have function f=x*x defined o...

8 years ago | 1 answer | 0

### 1

answerQuestion

How to solve this without goto statement?

Hi all, I think it is bad that matlab doesn't have a goto statement (many people will strongly disagree, but excuse me for the ...

8 years ago | 3 answers | 0

### 3

answersQuestion

Matlab hyperbolic PDE equation errors

Hello people, I am trying to solve a hyperbolic PDE and as a kickstart, I am using a code from matlab documentation but chang...

8 years ago | 1 answer | 0

### 1

answerQuestion

Matlab 2D hyperbolic partial differential equation change to 1D

I wish to change 2D hyperbolic PDE script to 1D PDE. I am a beginner in PDE to want to study the code and changes. Below is my c...

8 years ago | 0 answers | 1

### 0

answersQuestion

How to change the line width for fplot?

Hello All, I want to make lines in graph thicker. Here is my code, but it seems not working. clear all; close all clc; w1...

8 years ago | 2 answers | 2

### 2

answersQuestion

How to get roots of determinant (characteristic) equation?

Hello all, I am solving an eigenvalue problem and giving symbolic matrix as input. I want to find roots of characteristic equat...

8 years ago | 2 answers | 0

### 2

answersQuestion

Errors in passing a constant to a function in boundary value problem (bvp4c function)

Hello all, I am trying to solve a boundary value problem and I wish to pass value of variable E to odefunction() and bcf...

8 years ago | 1 answer | 1

### 1

answerQuestion

Is it possible to solve this equation without symbolics?

Hi all, I am doing research involving numerical computations. Obviously symbolics are expensive to compute. So I am trying to c...

8 years ago | 2 answers | 0

### 2

answersQuestion

How to pause execution of program until a keypress

Hi, I have two parts in my Matlab program and I want to pause first part until keypress event by user. I searched to pause func...

8 years ago | 3 answers | 2

### 3

answersQuestion

How to solve this symbolic nonlinear equation

Hello all, I am getting stuck at solving a nonlinear symbolic equation. Here is code: syms F0; %temp1 is obtained by so...

8 years ago | 1 answer | 0

### 1

answerQuestion

Efficient way to solve this (nonlinear) equation?

Hello all, I want to solve a nonlinear equation but don't know efficient way to do it in Matlab. Can anyone suggest a good way?...

8 years ago | 1 answer | 0

### 1

answerQuestion

How to display a string and matrix in MATLAB?

Hi all, This question can look very basic to some experts of this forum, however the question bugs me as I am not an expert. ...

8 years ago | 3 answers | 1

### 3

answersQuestion

Why to use vpa instead of double in dealing with symbolic variables?

Hello, I have a matrix in symbolic form and I want to convert it or display it as float. How to do this? Here is my simple cod...

8 years ago | 1 answer | 0

### 1

answerQuestion

Which is book should I use for learning matlab?

Hi, I use matlab for scientific computing and I use symbolic toolbox as well. I read some matlab books such as Gilat's, but mos...

9 years ago | 4 answers | 0

### 4

answersQuestion

How to substitute multiple values in symbolic matrix?

Hi, How to substitute multiple values in symbolic matrix? With function subs, we can substitute only single value in expression...

9 years ago | 2 answers | 0

### 2

answersQuestion

double integral in MATLAB, limits as variable?

Hi, Is it possible to do a double integral in MATLAB numerically, where limits are functions of variables? Say my integra...

9 years ago | 1 answer | 0

### 1

answerQuestion

Question in plotting same value for a range of values

Hi all, I am trying very hard to plot same values for a number of values, but no success. I request to you to help me. Here is ...

9 years ago | 0 answers | 0

### 0

answersQuestion

Unable to run symbolic script, MATLAB is making fractions extremely large and unable to handle them

Hi all,

9 years ago | 1 answer | 0

### 1

answerQuestion

How to plot a fixed value for a range in MATLAB?

Hello, This appears a simple question but I am not able to solve it. I want to plot a certain value for a range of variables. O...

9 years ago | 2 answers | 0

### 2

answersQuestion

Symbolic variable array problem

Hi, I am trying to create an array in symbolic variable. However I am not successful in this task, something is going wrong. I...

9 years ago | 1 answer | 0

### 1

answerQuestion

How to convert symbolic calculation to numeric?

Hi, I want to convert symbolic calculations into numeric one and substitute in the MATLAB program. This is because symbolic com...

9 years ago | 1 answer | 0

### 1

answerQuestion

Problem with symbolic math

Hello, I am trying hard to get code running, however I am stuck at a place. Please help me. I have declared 3 symbolic varia...

9 years ago | 2 answers | 0