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Accept 20 answers given by other contributors
Awarded to Omar B. on 06 Nov 2023
Feeds
Question
How to plot the error of two numerical methods on the same graph?
I'm trying to plot the error of two methods, but I got the following error Index exceeds the number of array elements (3) Also...
9 months ago | 2 answers | 0
2
answersQuestion
How to do a loop for different values?
I am trying to find basin of attraction of the roots, and I want to run the code for different values of q ( where q=0:0.2:...
1 year ago | 1 answer | 0
1
answerQuestion
How to find Basins of attraction for the Halley method?
I am trying to implwment Halley's Mathod to find basin of attraction of the roots, but when I run the code I got a black image. ...
1 year ago | 1 answer | 0
1
answerQuestion
How do I stop the code and get the results?
I am trying to run the Matlab code for Arnoldi method. The code dose not stop because the matrix is too large,. Is there a way t...
2 years ago | 1 answer | 0
1
answerQuestion
How to check two conditions?
How can I check two conditions in if and elseif statment? When I run the following code, I got the last sentence " Your input is...
3 years ago | 1 answer | 0
1
answerQuestion
adjust brightness of image
What is the difference between adjust the brightness of image by order of gamma and by alpha? Also, what is the difference betw...
3 years ago | 1 answer | 0
1
answerQuestion
how to evaluate equation at different values?
I'd like to find and save x at different values of mu. Itried to write mu=linspace (2.4,4,1000) but I did not know how to compl...
3 years ago | 1 answer | 0
1
answerQuestion
How to plot 2D Linear Inequality?
How to plot cond1 and cond2 with the cost in one figure? [x1,x2]=meshgrid(0:.1:10,0:.1:10); cond1=x1-x2<=-2; cond2=-0.3*x...
3 years ago | 1 answer | 0
1
answerQuestion
how to write a Matlab code to sum 10 terms of rational numbers?
How to write a matlab code to find the sum of 10 terms of the follwing series: (39/2)-(36/5)+(31/10)-(24/17)+...
3 years ago | 2 answers | 0
2
answersQuestion
How to collect the output in a matrix?
How can we create the block-tidaigonal matrix T using the output Omegas and Gammas as the picture I attached? n=100; k=2; ...
3 years ago | 1 answer | 0
1
answerQuestion
How to solve two equations for four unknowns?
How to solve the follwoing system for x and y in Matlab? syms x y b r E1=x - y == x/(1+log(b*y+1)); E2=exp(r*(1-x))== 1+log(...
3 years ago | 1 answer | 0
1
answerQuestion
Is there a way to find number of blocks in a matrix?
I have a matrix that has 5 blocks along the diagonal and two consecutive blocks overlap in one diagonal element. How can I comp...
3 years ago | 1 answer | 0
1
answerQuestion
How can I simplify a symbolic expression?
I have computed orthonormal polynomials using Gram-Schmidt process. I got the following last polynomial, How do I simplify it...
3 years ago | 1 answer | 0
1
answerQuestion
How to generate a normal matrix?
How to generate the following matrix in MATLAB? where is real number, and is odd number.
3 years ago | 2 answers | 0
2
answersQuestion
How to generate a nearly symmetric matrix?
How to generate in Matlab a nearly symmetric Toeplitz matrix ?I just know how to construct symmetric or nonsymmetric, but I do ...
4 years ago | 1 answer | 0
1
answerQuestion
How do we know the relation between times and the number of arithmetic floating point ?
I am trying to find out if solution of linear systems of equations with a triangular matrix by the backslash operation in Matlab...
4 years ago | 1 answer | 0
1
answerQuestion
why does my code take so long to run?
I am trying to compute v' * f(A) * v, where f is a given function, A matrix, and v is a unite vector. My code takes along time ...
4 years ago | 1 answer | 0
1
answerQuestion
How can we compute the derivative of polynomials?
How can we compute the derivative of the (m-1) polynomials at a point? I got the following error: The following error occurred...
4 years ago | 1 answer | 0
1
answerQuestion
How to created a specific symmetric Toeplitz matrix?
Hi , Could you please help to simplify the following code. I created a symmetric Toeplitz matrix where its eigenvalues [ 0.28878...
4 years ago | 0 answers | 0
0
answersQuestion
How can I measure time on MATLAB?
Hi, I am trying to measure the running time of solving system of linear equations using tic , toc. I have to compute the system ...
4 years ago | 1 answer | 0
1
answerQuestion
How to compute arccos for a matrix?
I would like to compute the arccos for a matrix. I know when I want to find log(), exp(), and sqrt () for a matrix , we use logm...
4 years ago | 1 answer | 0
1
answerQuestion
How to calculate expm of a matrix?
Hi all, I am trying to run the following but I got an erorr Error in expm if ~all(isfinite(A),'all') How can I fix that err...
4 years ago | 2 answers | 0
2
answersQuestion
How to delete the last rows and columns?
How to delete the last three rows and three columns from the following matrix without change N and then multiply the last off di...
5 years ago | 0 answers | 0
0
answersQuestion
How to create a Toeplitz matrix?
How to create a symmetric positive definite Toeplitz matrix with entries ?
5 years ago | 1 answer | 0
1
answerWhat type of function Matlab has help to construct symmetric matrix?
Thank you so much . I really appreciate your help.
5 years ago | 0
Question
What type of function Matlab has help to construct symmetric matrix?
What type of built-in functions (such as function Toeplitz) that come with Matlab help us to construct a symmetric matrix (not ...
5 years ago | 4 answers | 0
4
answersQuestion
Evaluating Function at Matrix ?
How can we evaluate the following function at matrix A?
5 years ago | 1 answer | 0
1
answerQuestion
how to create a symmetric Toeplitz matrix with bounds on eigenvalues?
Is there a way to creat a symmetic Toeplitz matrix of size 400 X 400 with real entries and its largest eigenvalue is 5 and the s...
5 years ago | 2 answers | 0
2
answersQuestion
How to generate a symmetric Toeplitz matrix?
How to generate a symmetric Toeplitz matrix ?
5 years ago | 1 answer | 0
1
answer
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