# jojo

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**Content Feed**

Question

Error plotting with space and time

Hello, I do not understand how to plot/visualize a solution to some function with different time and space steps. I have the ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Modify matrix for partial plot

How can I modify the for loops to create a bracket-shaped domain? In otherwords, I would like to plot everything and omit the fi...

2 years ago | 1 answer | 0

### 1

answerQuestion

log-log plot explained

How can do we produce a log-log visualization for the following data set? y=[0.6280 0.6554 0.6760 0.6877]; x=[0.27...

3 years ago | 1 answer | 0

### 1

answerfsolve to solve 5th order polynomial

This works. fun=@(r) (5/(r^2*9))- ((2)/(9*(6-r)^2))-r; x0 = 10; % some initial point x = fsolve(fun,x0)

3 years ago | 0

| accepted

Question

fsolve to solve 5th order polynomial

I would like to solve the following polynomial numerically for r: I am trying to use fzero as follows: r= (5/(r^2*9))- ((...

3 years ago | 2 answers | 0

### 2

answersQuestion

Problem using solve() and root muliplicity.

Why is this not working with the Rosenbrock ? It works with the test function. But how can I get it to work with Rosenb? The ...

3 years ago | 1 answer | 0

### 1

answerQuestion

Contour Plot with trace

How can I plot the following data onto a contour instead? close all; clear all; clc; syms x f=@(x) -100.*(x(2)-x...

3 years ago | 0 answers | 0

### 0

answersQuestion

unable to perform assignment because the left and right sides have a different number of elements.

I need to update t and dx as shown below, but i keep getting the error: "unable to perform assignment because the left and right...

3 years ago | 1 answer | 0

### 1

answerQuestion

Runge Kutta for system of eqs

I would like to approxiamte and plot the following system of equations: { u' = v ; v' = -4*u' - 5 u} using the Runge K...

3 years ago | 1 answer | 0

### 1

answerQuestion

solve an equation using solve() produces an array instead of a unique value

d = 32*h + 200*(32*h - 8)*((4*h - 1)^2 - 1) - 16 I am trying to solve for h using "solve(d,h)" , however, I keep getting an ...

3 years ago | 1 answer | 0