Justin Bruh

Active since 2016

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bvp4c gives error "The derivative function ODEFUN should return a column vector of length 4."
I'm trying to use bvp4c and it's giving me the error above even though my function vector is a column vector of length 4. What a...

5 years ago | 1 answer | 0

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answer

Question

bvp4c with more boundary conditions than equations
I'm working an orbital mechanics problem where I have four differential equations with four time dependent variables (radius and...

5 years ago | 0 answers | 0

0

answers

Question

Perform double integral of a symbolic equation?
I have the following code producing a 10x10 matrix of symbolic equations (B): syms x y phi(1)=x*y*(1-x)*(1-y); ph...

7 years ago | 1 answer | 0

1

answer

Question

How to solve for the first five values only?
I have an equation: cos(x)cosh(x)+1=0 There are infinitely many solutions to x but I only want the first five(only positive x...

8 years ago | 1 answer | 1

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answer

Answered
Compute function of two variables
I've figured it out. Everything down to the end of the 3 loops is the same. Then I added this fourth loop: index1=0; ind...

8 years ago | 0

Question

Compute function of two variables
I have a function Ux=f(x,t) where f(x,t) is an infinite sine series (which I've truncated at 50 terms). I want to find the value...

8 years ago | 1 answer | 0

1

answer

Question

Ignore answers with imaginarey components
I have a for loop nested inside of another for loop. I am using each for loop to vary a specific number (i.e A and B) to get eve...

8 years ago | 2 answers | 0

2

answers

Question

How to Solve a System of Equations with Multiple Variables
I'm working through a propulsion homework problem. I've gotten to the end where I've ended up with four equations and four unkno...

9 years ago | 3 answers | 0

3

answers