# David

### New Mexico Institute of Mining & Technology

Active since 2013

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Answered
How would I write a code to solve a system of equations?
In addition to the answers already posted, be sure to put sym() around each of your equations. That is to say, do the following:...

mer än 10 år ago | 0

Answered
Warning: Explicit solution could not be found.
This is what you need to do, I think. syms x2a x3 y3 x4 y4 upsilon=acos(x2a/6.85) x3=47.5+5.35*cos(upsilon) y3=5.3...

mer än 10 år ago | 0

Answered
Why does vpasolve work where solve doesn't for the following:
Hey everyone, It turns out, not surprisingly, that I needed to make eqn1 and eqn2 symbolic objects, which I did by wrapping ...

mer än 10 år ago | 1

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Question

Why does vpasolve work where solve doesn't for the following:
When I pass the following equations into solve like so eqn1 = (120*Lt*pi*Rt)/(14400*Lt^2*pi^2 + Rt^2)^(1/2) - 3389209018899...

mer än 10 år ago | 2 answers | 0

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Question

How can I create a symbolic vector of functions that dsolve will recognize as variable dependent functions. Need to do this in order to symbolically solve a system of ODEs.
I understand that to create individual time or space dependent functions, I can do the following: syms V1(z) V2(z) V3(z) .....

mer än 10 år ago | 0 answers | 0

### 0

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Answered
How I can plot the magnitude and phase response oh the function
"How I can plot the magnitude and phase response of the function y=(4*sin(50*t)/(6*t)" From what I've read, it seems you ...

mer än 10 år ago | 1

Answered
I am trying to run a code that results in AM. But in the frequency spectrum, I get the spectrum at a carrier frequency 6 times the original. What am i doing wrong?
Are you remembering to divide by 2*pi in your frequency plot?? w = 2*pi*f and 2*pi~6. If this isn't the problem then it may ...

mer än 10 år ago | 0

Answered
Indexing an 6 Dimensional array inside a for loop
"Folks, I am trying to call in the nth page of a 6D array from page 1 to 6. I am using the following code which is not loopin...

mer än 10 år ago | 0