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?

 

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

I'm running Maple 11.02 on an intel mac. I can no longer access the help menu search function or access any help topics for that matter. Also, if I hover over the 'help' pulldown menu, I get the spinning pizza of death. Reluctantly, the pulldown menu works but I still can't access anything other than a description of maple help. Thanks for any comments, Court Ashbaugh

Hello all,

 

I am sure that there is probably a simple way of doing this, but I can't figure out how. I want to take n sets. Say 2 for the moment: {a,b}, {c,d} and I want to output all the possible n-tuples (n=2) with 1 element from each set. So: [a,c],[c,a],[a,d],[d,a],[b,c].[c,b],[b,d],[d,b].

 

Does anyone know how I might be able to do this?

Thanks, S

Hello,

i'm solving an expression with the result being a range of the type RealRange.

e.g. RealRange(Open(-1.345464), Open(4.5343535))

How can i substract the max element Open(4.5343535) as real from that range.

Many thanks,

Remco

Hello,

 

this is probably a silly problem but I really didn't find any command for it.

Suppose I have a matrix and I want to remove some rows and columns to consider a smaller matrix within it. Is there a nice way to do it?  This is what I came up with:

restart;with(LinearAlgebra);

 

A := Matrix(3, 3, [[1, 2, 3], [4, 5, 6], [7, 8, 9]]);

 

temp := <(Column(A, 2)| Column(A, 3))>; result := <Row(temp, 2), Row(temp, 3))>;

 

Surely there is a better way to do this?

hi all,

i am quite an unexperience user so the solution to my problem might be obvious to you... i googled for a while and couldn't find anything regarding this matter.  i just want all my plots with maple to use the exponential notation on the y-axis. from what i've observed maple does that when values are on the E-6 regime or smaller, greater numbers are just written out which looks just ridiculous (e.g. .0005 -  i want 5x10^E-4). so is there a way to fix this, set some parameter that would force maple to use the exponential notation from earlier on?

Dear all,

I have used Maple to solve a system of equations. The result involves the variable _S01. Does that denote any (real?) number? What's the difference between _S01 and _Z01?

Thanks in advance

I need to create a magic square of order n=4 using a Matrix.

I have tried many linear equations system. Got me nowhere so far.

Hello! I have a problem in Maple 11 when I try to plot some functions in log log scales. It seems that maple doesn't calculate enough points for low x values because it draws curves with elbows even if they are differentiable. And the curves have very weird comportement for a sum of exponential... I tried to do it mannually (takin the log of the function and replace x by 10^x) but it's no better. It would certainly be clearer if you could see what I am talking about: is there a way I could attach my workwheet (or a screen shot) to the message? Thanks