
What is this?:This is a list that contains hotkeys and short cuts designed to make your time writing equations in...

Oct1712 06:24 PM
Gertlex

17 
200,256 
What's a good freeware latex editor?
I've been trying to install LEd, but it's not going smoothly, so I don't want...

Jun714 08:10 AM
freshman123

26 
73,378 
What are the advantages and disadvantages of MATHCAD, MATLAB, maple and mathematica?
Which one do you use, and why?

Sep914 01:52 AM
jassim

50 
129,844 
How can I show the regular part of the solution of a differential equation, numerically solved with NDSolve, if...

Feb1412 04:27 PM
Barnak

6 
1,385 
hello,
I am working on a project of electrocardiographique (ECG) signal compression, in this way i need to download...

Feb1512 03:06 AM
qassas

6 
18,114 
Hi,
I am trying to put a eqn in a function. So i can just type this function file name into another to find out the...

Feb1512 03:24 AM
Pythagorean

10 
1,876 
Hi every one!
I would like to draw a double integral function in related to R and h parameters by below MFile but...

Feb1512 04:36 AM
matinking

2 
1,439 
I have a 2d mesh with numerical values,I want to get image,colors to be proportional to num. values.If someone can...

Feb1612 06:38 AM
Milentije

0 
713 
I just downloaded scilab because Wolfram Alpha wouldn't want to plot the function I'd like.
In a physics problem I've...

Feb1612 09:08 AM
fluidistic

10 
2,984 
I have a 8000x600 Matrix called V. How can i add the colume 1,5,9,13,17... (all colume of (4*i+1) for i from 0 to 149)...

Feb1612 09:12 AM
kai_sikorski

1 
738 
If I have two strings of equalities within the same align or alignat environment, and the first one is long enough to...

Feb1612 09:38 AM
Fredrik

0 
1,001 
I have a system of three DE's and one other definition. The system I'm working with is given in the attached...

Feb1712 09:54 PM
IWhitematter

0 
695 
Hi
Say I solve the following differential equation in Mathematica:
s = NDSolve + Sin] y == 0, y == 1, y' == 0},...

Feb1812 04:55 AM
Niles

3 
1,339 
Hey guys. This might not be the right place for this, but any ideas on how I can use a vertical bar to represent...

Feb1912 12:15 AM
radiator

6 
40,846 
Does anyone have any recommendations for software, or perhaps a programming language that specialises in creating...

Feb1912 10:45 AM
gsal

1 
1,129 
I posted this in number theory "Ramsey Primes" but I don't think this qualifies as an improper use of this forum. I...

Feb1912 08:12 PM
ramsey2879

12 
2,857 
Hi all,
For some reason I can't post this in a more appropriate forum, so I thought I'd post it here.
I wrote a...

Feb2012 06:15 PM
DavidSullivan

0 
2,789 
how could i use matlab to find area under graph using numerical methods that the integral of flow vs time graph is...

Feb2112 12:11 AM
jhae2.718

4 
3,374 
Hi everyone,
I am wondering if I can input a matrix into Matlab that contains characters. I then would like to...

Feb2112 07:58 AM
jhae2.718

3 
1,536 
Hi,
I am writing a Matlab function(script), which take some input.
I have several datasets in the workspace, say...

Feb2112 11:53 AM
ghostyc

0 
1,229 
I am creating a figure using subplot, and would like to make the subplots larger and decrease the space between them....

Feb2112 01:24 PM
Old Guy

0 
1,613 
Hi
I have a system of ODEs of the form
dx/dt = v
dv/dt = a = C*f(x),
where C denotes a constant and f(x) is...

Feb2112 01:36 PM
Niles

2 
804 
I'm looking for some software I can use to draw reasonable technical diagrams the sort of diagrams you'd find in...

Feb2112 02:26 PM
cocopops

4 
1,699 
As in the title I have a matlab graph. Its a bar chart with two sets of data done in matrix form. When I try and put...

Feb2112 04:13 PM
mjpam

1 
2,570 
Hello, everyone! First time poster. Quick question: I am working in TeXShop on a Macbook. When I type $\nexists$, I...

Feb2212 08:00 AM
jhae2.718

1 
2,240 
I'm trying to analyze a fairly large (order 10^3) collection of PDB files to look for cationpi interactions for a...

Feb2212 02:38 PM
Bill Simpson

4 
877 
I have attached a picture of my problem to this thread. When I plot the column vector
x=
I get a straight line...

Feb2212 08:37 PM
jhae2.718

3 
1,253 
I'm simulating an ion beam with different charge states passing through two pinholes. I'm using random angles, from an...

Feb2312 04:12 AM
1Keenan

3 
1,038 
Hi,
I am trying to solve the laser rate equations in Simulink using the integrator block. But it gives an error...

Feb2312 04:52 AM
bflbfl

0 
2,085 
Hello.I want to plot a sine wave whose frequency changes with time
Here are my codes:
t = linspace(0,3,3000);...

Feb2312 06:00 AM
matts0

0 
1,434 
I am solving an eigenvalue problem  Hamiltonian problem in Quantum Mechanics. The matrix is 8x8 with offdiagonal...

Feb2312 11:50 AM
phy127

0 
1,174 
Please help me with this.
I need to code into matlab a function that results in a matrix answer.
It is this:
...

Feb2312 05:01 PM
frozenguy

3 
1,273 
I have the following document:
\documentclass{article}
\usepackage{cite}
\begin{document}
Super important...

Feb2312 05:29 PM
SoggyBottoms

1 
1,013 
I am trying to create noise that has similar spectral properties of a recorded tapping sound (so that I can mask the...

Feb2312 07:17 PM
MisterX

1 
1,608 
Hi guys,
I seem to still be having problems formatting polynomials in a standard way in Mathematica. I generate...

Feb2412 04:50 AM
jackmell

2 
1,346 
I would like the frame in a gnuplot plot to be slightly larger than the range of x and y.
For those who know e.g....

Feb2412 06:50 AM
DrDu

1 
943 
Hello everybody!!!
I'm a new member and I don't know if it is the right section, but I have some problem with the...

Feb2412 09:56 AM
angga333

2 
1,789 
Hi everyone!
I've written a Mfile to draw a sawtooth periodic function as below:
function y = sawtooth_w(x)
% We...

Feb2512 01:50 AM
matinking

0 
859 
Does anyone know how would I go about making a point , bounce up and down in a box in mathematica?
Would greatly...

Feb2512 07:14 AM
rbnphlp

2 
1,027 
ψ are eigenfunctions up to order 2 of the mathieu equation given by {(d^2ψ/dx^2)kcos(2x)}=Eψ with k=3.0
and E are...

Feb2512 07:49 AM
euclude

0 
1,029 
Hi
My question is not related to a specific piece of software, but more of a technique. I have a probablity...

Feb2512 10:34 AM
Niles

0 
722 
I need to define two functions for a molecule with speed s.
a)it has a horizontal velocity between s and s
b) v ,...

Feb2512 01:41 PM
jackmell

3 
1,096 
2. Relevant equations
Theory for Kapitsa pendulum predicts that the motion consists of 2 parts:
x(t)=X(t)+ x˜(t) ...

Feb2612 05:00 AM
kai_sikorski

4 
1,663 