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Awarded to Amit Kumar on 20 Jul 2017
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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...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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*...
environ 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
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, ...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 10 ans il y a | 3 réponses | 0
3
réponsesQuestion
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...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 10 ans il y a | 1 réponse | 1
0
réponseQuestion
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...
plus de 10 ans il y a | 2 réponses | 2
2
réponsesQuestion
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...
plus de 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 10 ans il y a | 1 réponse | 1
1
réponseQuestion
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...
plus de 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 10 ans il y a | 3 réponses | 2
3
réponsesQuestion
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...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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?...
presque 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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. ...
presque 11 ans il y a | 3 réponses | 1
3
réponsesQuestion
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...
presque 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 11 ans il y a | 4 réponses | 0
4
réponsesQuestion
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...
presque 11 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 integrand is ...
environ 11 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 ...
environ 11 ans il y a | 1 réponse | 0
0
réponseQuestion
Unable to run symbolic script, MATLAB is making fractions extremely large and unable to handle them
Hi all,
environ 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 11 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
environ 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 11 ans il y a | 2 réponses | 0
2
réponses
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