# ssmith

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Question

Plotting complex sinusoid to a cosine wave

I have the complex exponential equation (z) and I want to adjust the plot to produce a cosine wave of amplitude of 5.0 that is s...

1 year ago | 1 answer | 0

### 1

answerQuestion

How do you use ode45( ) when the equation is not in dy/dt form?

I have an equation that I need to approximate the solution for using ode45( ) with initial values y(0) = 1 and y'(0) = 0 on inte...

2 years ago | 2 answers | 0

### 2

answersQuestion

I have initial value problem that I have to write the right side into a vector function

I have DEs that I need to write into a vector function and use ode45 to approximate the solution for the initial value proble...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to adjust axes created using plot

I have a function that I have plotted on an interval of [-10,10] but I am not sure what the function is that will adjust the axe...

2 years ago | 1 answer | 0

### 1

answerQuestion

rref( ) row echelon form MATLAB

I found the row echelon form of my matrix A but now I am trying to find the solution set to the system. Is there a function that...

2 years ago | 1 answer | 0

### 1

answerQuestion

I have differential equations and I need to write them into a vector function

How do you write the right-hand-sides of the differential equations into a vector function?

2 years ago | 1 answer | 1

### 1

answerQuestion

Trying to write a function using @

I am trying to write this function in my code but I am getting an invalid MATLAB syntax error. The equation is g(x) = sin(x)/x ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Use colon notation to rewite a linear system

Suppose A is an augmented matrix representation of a linear system. A = [-1, 2, -3; 4, -5, 6] Rewrite as matrix equation Cx ...

2 years ago | 0 answers | 0

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answersQuestion

Trying to do product of eigenvalues collected from a matrix

I have a matrix that I have used eig() to find the eigenvectors and eigenvalues, but I cannot determine whether the matrix is in...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to get rid of floating-point constants

I am trying to evaluate this expression but I get an error saying I have a floating-point constant. If I add another parenthases...

2 years ago | 1 answer | 0

### 1

answerQuestion

MATLAB determine if matrices are invertible or not

I have two matrices that I am looking to find the determinants of and see if they are invertible or not. I entered in my matri...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to solve matrix raised to -1

I have a matrix A, and I am looking to find matrix A^(-1) but cannot seem to enter it into MATLAB in the correct format. Here is...

2 years ago | 1 answer | 0

### 1

answerQuestion

Colon Notation Function using Matrices

I have two matrices A = [-1, 2, -3; 4, -5, 6] B = [0, -1; 2, 10; -4, 3] And I need help understanding what is happening in t...

2 years ago | 2 answers | 0

### 2

answersQuestion

When you type m(1) or m(10) in the command window, what is happening?

m(1) ans = -3 m(10) ans = 0.6000 m(0) Array indices must be positive integers or logical values. m(0) does n...

2 years ago | 1 answer | 0

### 1

answerQuestion

Hello I need MATLAB help

dicomread to load the images but I am not sure how to go about loading the files from a folder. If anyone can help I would great...

2 years ago | 2 answers | 0

### 2

answersQuestion

Save Movie Video to Computer

I have almost 600 dcm files saved into one large folder that I want to load into my MATLAB code to read the data files and print...

2 years ago | 1 answer | 0

### 1

answerQuestion

I am trying to use imshow to take data in a .txt file and print out the image made from the data.

So far my code looks like this a = dlmread('data.txt'); imshow(a); But when I go to run the code I get an error saying "E...

2 years ago | 1 answer | 0