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Going under...

October 10 2008 Ian Jones 91

 I hope someone may be able to help with some operational problems in moving from v2.5 to v3. Yes, I know .....but there is a case for not being totally up to date. I have ironed out any technical (ie mathematical) problems but the operation of such an expensive but poor piece of software is staggering. We have been using it for three years and know all the groans about 'early' versions

 

How to collect...

October 09 2008 lemelinm 1350

Hi all,

 

I have

I know this is petty but it is driving me mad....

In maple 11 if you made a change to character style (via format\ styles\) it used to be saved and remain changed if you closed maple and reopened another day. Now the changed styles only stick for the worksheet in which you made the changes.

How do I make styles stick long term?

thanks!

<p>Is there a way to plot a single graph with multiple functions, where I can set a different scale for each function?</p>
<p>I want to get something similar to this:</p>
<p><a href="http://www.mapleprimes.com/viewfile/2818"><img alt="" src="http://www.mapleprimes.com/scripts/image.php?image=http://www.mapleprimes.com/files/9471_plot.png&width=300&height=300" /></a></p>
<p>I can plot multiple functions in one graph with display(); but it is the multiple scales part that's giving me a headache...</p>
<p> </p>
<p>Thanks</p>
<p>Thomas</p>

subscript...

October 09 2008 Steph123 92

Hi,

I was wondering if there is a way to return only the subscript of an element in a sequence.

Essentially I have something like t:=a[[1,2]] and I want the list [1,2] to be returned. I can't think of anyway to do this. For instance solve(t=a_x,x)...

 

Any help would be appreciated.

 

I have to create a n-dimensional interpolation to get function to use it in a numerically solved differential equation. T:=(x,y)->ArrayInterpolation(Ranges,Img,[[x],[y]],method=linear)[1][1]: T(3.3,4.1); 1.30999999999999983 int(T(3.3,x),x=0.0..1); Error, (in CurveFitting:-ArrayInterpolation) invalid input: coordinates of xvalues must be of type numeric

Hi

Does anyone know how to reset the memory during a large number of loops? I've read jet's post on this subject and someone mentioned garbage collection but I'm not clear how to go about doing this.

Basically what I want to do is after every 10 loops or so export the answers, keep the few variables I need and then reset the memory (equivalent to closing down maple & reopening).

 

How do I save output from print(%) in a list [ ] ?

I can copy and past the output and then define it but I want to find a way without copy paste

A:=[ output 1 from print(), output 2 from print(), output 3 from print() etc etc ]

 

Hi all,

ok, I have an excel sheet contaning three columns of data for 250 stocks .  

time          stock             close

2005         stock A           200

2006         stock A           300

2005         stock B          100

I have Maple 11.0. I met a wield problem just now. After I put following expression to the math sheet: (exp(-x)-1)(exp(x)-1)/(exp(-x)-exp(x)) It gave me : ((exp(-x))(exp(x)-1)-1)/(exp(-x)-exp(x)) Obviously it's not what I want when I plot it. it gave me a curve across (0,0.5). But it can easily be calculated the value of this function equals zero when the input is zero.

Dear, all

 

I got a problem during my ploting a 3d figure.

One of the axis, say axis-X, is ranged between 1000 to 2000,

after ploting I found the labels appear like this: (100, 150, 200) *10

I would like to convert it to (1000, 1500, 2000), since this kind of value is more familiar in our fields.

I tried to change the numerical format in the format tool manual, but it seems that is only for the text but no plot.

Any idea?

 

Recursive...

October 07 2008 Steph123 92

Hi,

 

I have a list of smaller lists. E.g.

A:=[[a,b],[b,c],[b,c,c],[d,c,c]]
 

I want to write a code that views any elements where all but the first element in the smaller list agree and gets rid of spares. So in A I would want to get rid of [b,c,c] (or [d,c,c]- I don't care which one). I wrote:

 

I have a large section of code which comes down to one single value  which is different each time you execute the section due to a

random component.  I want find a simple way I can loop the complete section of code and get the output 1, output 2, output 3 etc etc

without having to go in and put [ i , j ] on every single variable. I can do it manually by just start in the begining and press

enter all the way , write down the result and move the cursor to the begining again and start all over again but it is very time consuming.

Hello, I know (more or less) how to obtain the Lie symmetry generators of an ode, but how can I do symmetry analysis (finding the classical symmetries, canonical coordinates, reducing the system) on systems of nonlinear first order ode's? Regards, Nijso
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