Maple Questions and Posts

These are Posts and Questions associated with the product, Maple

I have a 4 by 4 matrix that I need to augment to a 7 by 7 matrix.

I find I can use the "|" operator to append a column to my original matrix. So I can do this three times and I have a 4 by 7 matrix.

Now, the only way I have found to add the three rows I still need to add is to transpose, use "|" three times and to transpose back. While this indeed works it is rather clumsy and probably not efficient.

Is there a better way to do that better; i.e. is there...

A better approximation gives more digits of accuracy in the result per digit of precision used in the computation than a good approximation does.  I was wondering if anyone could come up with a better approximation to the MRB constant than 31/165, 

Hi,

I need to fit a complex function to some data points Couuld you please show me what Maple operations to use?

The function is:

pn := unapply(KT*bn*(sum((dWn[i](lambda)*(sum(c[i+r]*binomial(i+r, i)*(Lmbd0(lambda)/bn)^r, r = 0 .. nterm-i))+IWn[i](lambda)*(2*lambda^3-2)*(sum(r*c[i+r]*binomial(i+r, i)*(Lmbd0(lambda)/bn)^(r-1), r = 1 .. nterm-i))/(bn*(3*lambda^2)))/bn^i, i = 0 .. nterm)), lambda);

- 'IWn' and 'dWn' are known (and long) functions of lambda.

This is an important topic which is why I have labelled it as a post.  Many users would like to know how to implement a minor fix to versions where fixes have not been applied.

I will start with one example.

   pdsolve had an issue where the fourth order term was not evaluated in the pdsolve command.  The issue 
   works Maple 16.  To those users of earlier versions where the code didn't work, it was ...

   showstat(pdsolve)

Dear everyone,

 

  Hello,

  I have a question related to copy and paste in Maple 16.

 Consider an input like

**********************************

eq1:=4*x^n*y^m+3*x^2+5*y^2;

f1:=map(t -> `if`(match(t = c*y^d, y, 's'), subs(s,c), NULL),
      convert(eq1, list));


f2:=map(t -> `if`(match(t = c*y^d, y, 's'), subs(s,d), NULL),
      convert(eq1, list));

Sir/Madam

My Version of MAPLE is 13.02

I have the following expression on my worksheet:

 

(63/8) ((cos(Θ))^5)[G,H,L,P,T,U]^5 -(35/4)((cos(Θ))^3)[G,H,L,P,T,U]^3 + (15/8)(cos(Θ))[G,H,L,P,T,U]

 

I do not need the factors of [G,H,L,P,T,U] and I want to delete them, but all my efforts in the past few hours are in vain. I have tried to highlight those expressions and then use the EDIT -> DELETE ELEMENT...

Hi,

 

Is there a way to generate Java or C code to implement a general nth order linear ordinary differential equation?

I am looking to be able to send the coefficients and have it compute the time waveform given initial conditions.

 

Regards.

how can I solve memory used limitation problem on MAC OSX LION .After memory indicated on the bowwtom of the sheet reaches 57M it freezes.

I noticed the following behaviour in Maple 16:

x1 := (a)^(b):
eval(x1,[a=103/100]):
evalf[3](%);

                                 b
                             1.03

I wish to use the 'Numeric Formatting' feature on some results in Maple, to show the correct significant figures in the results. But when I apply Numeric Formatting to any result, the decimal seperator changes from the usual dot (.) to a comma (,). How can I keep the dot as decimal seperator while applying the correct significant figures?

 

Thanks. 

I entered the following code in Maple 15.  In one instance it plotted the correct graph with the "x" and "y" labels exactly where I wanted them.  The identical code, in another instance (and again in a separate tab) generates an error:

  "Error, (in plots:-display) cannot make plot structure from object with name textplot"

 

Of course, when I click the error above in Maple (it is a link), a Maple webpage comes up that says:

If anyone was interested Euro 2012 starts tomorrow.  Using the FIFA simulation created by Robert Israel one could enter the new values for the ELO ratings found here http://www.eloratings.net/euro_cup.html to create a similar simlation of Euro 2012.  Just for visual sakes here's the ELO ratings for the teams in the tournament.

mapletrig.mw

Hi all,

I need to solve a simple integration as shown in the attached work sheet.  But don't know how to obtain the required answer as shown.

I shall be very thank full if you guys could help me out with this.

Best Regards

A.Q

Please excuse me if this question is too basic or has been answered before, though I've spent a couple of hours searching for similar questions without any luck.

I have the following expression, which is given in terms of other expressions:

Dear Maple Users

I have been testing Maple 16 for some time now, and I am overall very pleased with it. There is however one issue, which is really annoying. In previous version of Maple, images inserted into Maple and plots were printed much bigger than they looked like in the Worksheet. Then me and other users have requested to have the printed output look more like it does in the Worksheet on the computerscreen. Maple has adressed those user complaints in the new...

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