Dimitrios Anagnostou
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Question
Plot a direction field whose vectors have the same size
I want to plot the direction field of the ODE . Here is my script. % Clear previous figures, workspace, and command window cl...
3 months ago | 1 answer | 0
1
answerQuestion
Plotting inequalities on the complex plane
Despite using Matlab for several years, I am little ashamed but I have no idea how to plot the set on the complex plane that sat...
4 months ago | 2 answers | 0
2
answersQuestion
Display without new line
To demonstrate various formats of MATLAB, I use the following script: x = 1/7; format short, fprintf(['format short: ']), x % ...
10 months ago | 2 answers | 0
2
answersQuestion
Plot a region based on inequalities
This comes from the book Mathematics for Engineers and Scientists of Alan Jeffrey. To create the graphic with Matlab I wrot...
11 months ago | 1 answer | 0
1
answerQuestion
Solve a transcendental equation
I know it is simple but I am puzzled how to force Matlab to solve the following equation to get This is what I do (assum...
12 months ago | 1 answer | 0
1
answerQuestion
Covert a string to an array of individual characters.
I apologize if my question is trivial. I have the following datasets.The letters in each dataset represent student names enroll...
1 year ago | 1 answer | 0
1
answerQuestion
Solving Inequalities with Matlab
I guess this is a frequent question here but the answers I have seen did not help me. I want to solve the following inequality:...
1 year ago | 1 answer | 0
1
answersymsum and a divergent series
I accepted John D'Errico's thorough answer but to Matlab's defense I post also my answer. The problem was my typo. I have forgot...
1 year ago | 0
Question
Visualising 3 times 3 linear algebraic systems and their intersections
I want to interpret geometrically linear systems. Consider for example the system With the following implementation of R...
1 year ago | 1 answer | 0
1
answerQuestion
symsum and a divergent series
I apologize if I'm asking something trivial. I know that symsum can be used for series. For instance, syms k symsum(2^k/facto...
1 year ago | 2 answers | 1
2
answersQuestion
Force 0 tick to appear in a scatter plot
I cannot make the 0 tick appear nomatter what I tried. Here is my code. clc, clear, clf n = 0:10; f = n.^2; scatter(n,f, 'k'...
1 year ago | 1 answer | 0
1
answerQuestion
Float information (as in Python's sys module)
I know that there exists commands like eps, realmin, realmax etc. Is it possible to obtain complete float information as provide...
1 year ago | 1 answer | 0
1
answerQuestion
Question about internal aithmetics
Let and . I use the following code to find out what is the smallest value of that makes the equality false. My question is a...
1 year ago | 1 answer | 1
1
answerPlotting three planes and their intersections
Finalement, I found the solution. I post the script in case anyoone is interested in. clc, clear all close all set(0,'defaultT...
2 years ago | 0
| accepted
Question
Plotting three planes and their intersections
I have three planes described the by the cartesian equations. I want to plot the planes and their intersections. I have writ...
2 years ago | 2 answers | 0
2
answersQuestion
How to plot the region corresponding to an inequality?
I want to plot create the region plot for the inequality for . In Mathematica this can be done by RegionPlot[y - x^2 >= 0, {x,...
2 years ago | 1 answer | 0
1
answerQuestion
Solving an overdetermined system of linear equations
According to my textbook "Matrix Operations for Engineers and Scientists - An Essential Guide in Linear Algebra" by the late Al...
3 years ago | 1 answer | 0
1
answerQuestion
Mesh plot of the function sqrt(y-x^2)
I want to plot the function The function is defined for . With f = @(x,y)sqrt(y-x.^2); fmesh(f,[-3 3 0 9]) I get a mesh plo...
3 years ago | 2 answers | 0