# Christopher Arreola

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**Content Feed**

Question

Matlab is outputting the vector and summation of vector components as one in the same and giving me a plot even though I don't call upon it, how do I fix?

So using the Optimization Toolbox app, I need to be able to obtain the values of the vector, sol.xo, but it keeps giving me that...

10 months ago | 0 answers | 0

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answersQuestion

Can't figure out why my ODE solver is producing a straight line

Here's my code, can't figure out why it's only giving my a straight line, this is supposed to be a system of 3 nonlinear ODE's ...

10 months ago | 1 answer | 0

### 1

answerQuestion

How do I add a toolbox that is downloaded off a separate site and not through the Add-on explorer?

So I'm trying to install the following Bifurcation Analysis Toolbox and I can't seem to figure out how, I know the usual route i...

11 months ago | 0 answers | 0

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answersQuestion

Code is displaying graph but not plotting any points

So this code is came from a textbook and was written in the late 90's, so syntax is not working properly in newer version of mat...

1 year ago | 1 answer | 0

### 1

answerQuestion

Need help fixing errors on code written in old MATLAB syntax

So this code was written to accompany a textbook I bought but the code was written back in the late 90's so it has old syntax th...

1 year ago | 2 answers | 0

### 2

answersQuestion

Changing number of minor ticks between each integer

I currently have 4 minor ticks between each number, which is the go to number matlab uses unless otherwise specified. How do I c...

1 year ago | 0 answers | 0

### 0

answersQuestion

Simple way to "shrink" the dashes on a line

I want to make the dashes on my lines a lot smaller than they are. Here is a sample for line of code I used for each line: plo...

1 year ago | 1 answer | 0

### 1

answerQuestion

Instead of a legend display for a plot, I would like to have the labels of each curve next to it

Here's my graph: and here's the graph I'm trying to replicate: Notice how the labels are either on top(or bottom) ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Plotting a dashed line onto a graph

So here's my graph: How do I add a dashed line that originates from a particular point somewhere in the middle of the plot ...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to change markers on axes to be on the opposite side and how to add more markers in between that are smaller

So here's my graph I would like to flip the axis markers for each point to the opposite side and add more markers in betw...

1 year ago | 2 answers | 0

### 2

answersQuestion

How to remove or add portions of the x-axis that isn't being used

So this is what I'm working with: As you can see, the graph for both functions ends at 5 but the x-axis continues until 6. I wou...

1 year ago | 1 answer | 0

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answerNeed help debugging so I can accurately portray graph of ODE system that is numerically solved

I have fixed this, it was due to m

1 year ago | 0

Question

Need help debugging so I can accurately portray graph of ODE system that is numerically solved

So I'm able to produce the following graph but I need help debugging so I can figure out why it doesn't look the way it should l...

1 year ago | 1 answer | 0

### 1

answerQuestion

Amend a column vector to a matrix array

What are some simple ways to amend a column vector to an array? I am trying to avoid setting a fixed number of column vectors to...

1 year ago | 1 answer | 0

### 1

answerQuestion

ODE solvers and code

Is it possible to see the code behind any of the ODE solvers? Or is this kept under lock and key and the inner workings are kept...

1 year ago | 1 answer | 0

### 1

answerQuestion

Finding appropriate step size for set of ODE's numerically solved without an ODE solver

So I'm trying to implement the following code to replicate this graph(parts a. and c. only) Here is my code, the time step ...

1 year ago | 0 answers | 0