## Annoying problem with curly brackets...

Hi

My Maple 13 puts small curly brackets to the left side of an expression and this causes several problem for me. What should I change to write good ones? (I mean normal, big brackets, not small brackets to index.) (I use the AltGr+b combination to write a left curly bracket.)

## isdifferentiable bug?...

Compare the results of isdifferentiable on 3 piecewise defined expressions f, g, and h.

The first time the order of the asking is f, g, h. The second time (after a restart) the order is h,g,f.

The results are remarkably different! What is going on?

isdifferentiable was first brought to my attention within the last week or so, maybe it is not reliable?

If you remove all the lines with 'assuming' then the inconsistency remains.

restart;

## Symbolic Matrix...

Hi

I want to solve this Problem

Symbolic_Matrix.pdf

in symbolic by maple, but i can`t.

is there any symbolic solution by maple or not,

## About three parameters of flexible beam...

I don't quite understand about some parameters of flexible beam. Please introduce  briefly.

1. Truncation order of inertial terms
2. Truncation order of elastic coordinates
3. Number of elastic coordinates

## why does operation work different and how i can g...

help_for_maple_quest.docplease give a explain how to work for operations.

## Maple 14 x64 and Visual Studio 10 Professional...

Does anybody know how to make Maple 14 work with Visual Studio 10.0 Professional (not the express version)?  I can't seem to make this happen.  The problem has to do with the PostLink command.

## numerically solved one non-linear equation in pres...

Hi, again, I am a physist. It is convenient to solve problems in presence of units. I have a equation (1-variable) including a erf function to solve. As I substute all the constants (with units) and then use 'solve'. It returns a warning without any result. I am not really familiar with the numeric package in maple. Could anyone give me some advice? Thank you.

## flexible slider-crank mechanism?...

There is a example "3D rigid slider crank" in the MapleSim examples. Replace the "crank" and the "rod" with flexible beam, turn it into a flexible system, how to do that?

Thank you very much!

## Integral over Dirac distribution...

Hello,

I want to evaluate an integral over the Dirac function with basically the following assignments. (I had some troubles parsing here...) Then I want to plot function rho(epsilon). What I get is just an empty graph with nothing displayed although test has only values in the range -3...3. I am pretty new to maple and don't know how to compute this in another way.

> test(x,y,z) := .2686733768*x^2+.2686733768*z^2-.2178281566+.2686733768*y^2+(-1)*1.000000000*sqrt...

## Why is mserver.exe crashing?...

Whenever I have 2 instances of the rotational move block in a model, mserver.exe crashes when I try to run the simulation. Why is this?

## Graph Theory-:NonIsomorphicGraphs help...

Hey everyone,

I've been using nonisomorphicgraphs for a while now, and my professor would really like to know if there is a pattern in the order in which it spits out the graphs. I've noticed that they pair them up in complements of each other(or as close as possible), but has anyone found the order in which they come out, and what the reason for this order is?

## model a brushless DC motor...

Who knows how to model a brushless dc motor?  Can I use a synchronous machine and some circuits? Brushless dc motors do require rotor position information in order to select the appropriate commutation angle. Using three Hall sensors? But how to model a hall sensor or something which can specify the rotor's position and send out a signal? I am looking forward to your answer. If you have some experiences of modeling a double closed-loop dc machine using maplesim, please tell me too.

## Universal Portfolio...

Can anyone explain the below printscreen in simple terms ?

on pages 24. Why do we have such a ratio (second formula) ?

## kmean cluster analysis graph theory...

I can't seem to find anything on cluster anlaysis (kmean etc...) in Maple's help.  I thought graph theory might contain something close but not really.  I haven't tried but I suppose it shouldn't be too hard to create a few procedures for such things?  Can someone provide a few examples?

Of the 3 M's Maple seems to have left this one out?