Hi all,

I was just wondering about a smart way to diff a vectorfunction.  Lets say i want to diff this vector:

v:=<5*t+1, (1/2*(-10))*t^2+50>

When i try to diff v it says:

"Error, non-algebraic expressions cannot be differentiated"

I know it's possible do do by:

<diff(v[1],t),diff(v[2],t)>

But is there a better way?

/Simon Johansen
 

Dear all,

my Maple sheet is structured in sections. So far, I could not find (Maple Help, Google, Mapleprimes) an easy way of commenting out (i. e. disabling or deacitvating) a section or subsection. Any hints how to do that? (Similar to C++ with its /* ... */ or many (LaTeX) editors with the "Insert comment" function.) Writing a # manually in front of each command is not regarded as "easy".

Cheers,

Ben

1:  6n + 5

2:  150 n^2 + 200 n + 55

3:  420 n^33 + 770 n^2 + 410 n + 57

4:  630 n^4+1470 n^3+1155 n^2+343 n+29

5: 13860 n^5 + 39270 n^4 + 40740 n^3 + 18711 n^2 + 3591 n+205

int(exp(1/((x-a)*(x-b))), x = a .. b)

complexplot examples in the help is limited.

this is a example

abs(z-a)-abs(z+a)=2c

c is a fixed,

a is a real number

a is a complex number

plot the locus.

Dear All

I am trying to substitute an expression that contains hermitian operators where the ordering is crucial.  I have tried algsubs and simplify-sidderels, but they both do nothing.

I am trying to substitute;

a + b*c*b = R

where all are defined as hermitian operators in the Physics package.

into an expression;

H = - a - b*c*b

but nothing happens...

However, when I substitute a = R - b*c*b, rather than getting H = -R, I get;

H = -R + c*b - b*c*b

This GARCH model in Maple is driving me crazy. I have successfully estimated the two parameters in excel

which was quite straight forward with the help with Hulls book page 380 (please see attached file for data)
 

Download 8342_GARCH Estimation (Hull).zip
View file details

 

Ok, so for my Analytical Mechanics class, we have a problem that requires the use of Maple, Mathematica, etc to solve. I was able to get a workable solution, but getting a final answer (for initial groundspeed, as I'll describe in a minute) involved a process of guess and check, manually tweaking variables to find a close approximation. My professor's solution did much the same thing. I don't like guess and check, since I'm sure Maple is capable of doing what I need it to do automatically. So I'd like some suggestions on how to make it work. First, though, The Problem:

Hi there,

I am working through the example in maple help,

trying to save a lib (maple library)

Hi,

I have written several procedures (predefined function).

How do I make them a package?

So I just have to load it with "with(myfunctions):"

then I will be able to use thses functions.

 

I have had a look at
http://www.mapleprimes.com/forum/maplepackagemodule

not so sure if I understand all.

what function should I look it maple help?

 

Thanks in advance.

casper

Hi,

is it enough to check wether two lists are equal using "is(a=b)"?

a:=[1,2,3,1,5];b:=[1,2,3,5,4];c:=[1,2,3,1,5];

is(a=b);
    false

is(a=c);
    true

 

the results seem fine. Do I have to check each element? I just want to be sure of it.

 

Thanks.

 

casper

 

Hello there, I was wondering, is there some way to make the following task any easier? It requires a lot of work to plot this. I want to be able to do it in maple, easily, otherwise there must be other programs where vector plotting is easier? I really want to be able to do this easier. Thanks a lot. You can see the picture uploaded. http://img263.imageshack.us/img263/4193/vectorplot.png Also the necessary text i written below. We have the points A(-3,5), B(-1,8), C(3,6), D(8,-4) Draw vector AB, BC, CD and DA and determinate their coordinates. AB = 2,3 BC = 4,-2 CD = 5,-10

Hi!

I have to use code from older Versions of Maple which is for example of the form (only much longer)

> a := proc()
> local i;
> i := 89;
> i;
> end proc;
> a();

Hi,

I was looking at this page

http://www.maplesoft.com/support/help/Maple/view.aspx?path=ImportMatrix

However, it didnt mention how to save Matrix into Excel or CSV file.

Can Maple do that?

 

Thanks.

Casper

<p>Delete Implement of a Vector</p>
<p>example I have a vector </p>
<p>A:=<1,2,3,4,5>;</p>
<p>How to operate to give a vector have form</p>
<p>A:=<1,2,3,4>; or A:=<1,2,3>;</p>