## Calculus...

Prove that vectors , and are coplanar if and only if vectors ,

## Simulation and solution to SDEs with jumps?...

Hi all,

I am looking for toolboxes that can handle simulation and solution of
SED with jumps, say levy processes, jump diffusion processes, etc.
Could anybody give me some pointers to really good ones in Maple and
Matlab? I did google search myself and have some findings... however I
would like to know some really good ones and popular ones so I can
discuss with fellow users more conveniently...

Thanks!

## Choose an interval?...

Hi!

I want to set up a question where students first should do some calculation (p-values actually). Next step would be to see if this value is an element of intervals given by me. It seems reasonable to attempt constructing a multiple choice question, but there could be alternatives. In the case of a MC, the alternatives could be like the following:

1. <0.005

2. 0.005-0.01

3. 0.01-0.02

4. 0.02-0.025

5. 0.025-0.05

6. 0.05-0.10

7. 0.10-0.15

8. >0.15

## Newton-Rhapson procedure...

I'm trying to construct an iterative procedure NR1(f,x0,N) where f is a function, x0 is an initial estimate (which can be complex) and N the number of iterates.

Given:  xk+1=xk - f(xk)/f'(xk), k=0,1,2....,

Now for example by defining f:= x-> x^2-2 and inputting x0=1 and N=10 i should be able to check that my procedure calculates sqrt(2) correctly.

This is what i've got so far.....

## openmaple for c++ builder...

HI2all! I use c++ builder 5.0 to create interface for maple code.At first I tried to start example from openmaple help topics. I have copied example and have inserted it to console wizard of c++ builder. Copy header files to work directory... At first i received(for strings of .h files: INTEGER64 int64;): [C++ Error] mpltable.h(239): E2176 Too many types in declaration [C++ Error] mplshlib.h(148): E2176 Too many types in declaration [C++ Error] mplshlib.h(210): E2176 Too many types in declaration [C++ Error] maplec.h(266): E2176 Too many types in declaration

## Implicitplot: Extra unknowns error...

I am having problems using implicitplot.  I run this code and it worked and today I tried it again and it gives me the following:

with(plots,implicitplot);

implicitplot(0=int(erf(  (T-e*t)/sqrt(2)  )*t^2*exp(-t/2),t=0..infinity),e=0..1,T=0..10);

Error, (in plots/implicitplot) invalid input: the following extra unknowns were found in the input expression: {t}

The weird thing is that this worked before (took about 10min though) and now it isn't.  Any suggestions?

Thanks

## A Propositional Calculus Problem...

Verify this by showing how to deduce Σ

## SSL with Maple T.A. 3.01...

Has anyone implemented https for Maple T.A. 3.01? Mainly we are looking to secure the login and password information, but if everything must use ssl, that's ok. Thanks.

-Jeremy Sieminski

## Legendre Functions...

Can anyone help with number 12.2.5?

thanks,

very respectfully,

## Authentication - anybody using Apache/Kerberos?...

We are looking to use TA.  Our Uni common authentication system uses Apache/Kerberos.  Is there a way of getting TA to use the Apache-supplied authenticated username?

The documentation seems to suggest the only options are TA's internal user/pw system (where I saw something that suggests the p/words are held in plain text(!)) or an LDAP server.

Grateful, as always,  for any insight.

Toby

## Hamilton's Equations Of Motion...

Obtain Hamilton's equations of motion for a plane pendulum of length l with mass poin m whose radius of suspension rotates uniformly on the circumference of a vertical circle of radius a.  Describe physically the nature of the canonical momentum and the Hamiltonian.

v/r,

Thanks,

## Central Force Motion...

I know this is a mathematics forum, but I think that there are many faculty members and others here directly or indirectly affiliated with physics.

Again from Goldstein's, "Classical Mechanics" Chapter 8, The Hamilton Equations Of Motion.

The question is:

Write the problem of central force motion of two mass points in Hamiltonian formulation, eliminating the cyclic variables, and reducing the problem to quadratures.

dc

## Least Square Fitting Approach in Maple...

Hey

How would i go about modelling the Least Square Fitting Approach in maple?

I am concentrating on a 3x3 to a 5x5 grid rather than infinate.

the formula is

y = C  + Dt

I know the least fitting approach then goes into inversiting the matrix, or something, but i dont understand the math model which is why i want to model it in Maple.

Thanks for any help

## ComboBox...

To Maplet Experts:
There is dearth of work  on ComboBox, a maplet element.  How does one access an item in a ComboBox.  How does one know which item in the itemlist is selected.  How does one pass selected item as an argument in a function,
I will appreciate any respond to these questions.
Pat Velez