PatrickT

Dr. Patrick T

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16 years, 304 days

MaplePrimes Activity


These are replies submitted by PatrickT

very nice Acer, this would be very useful.

as for the context menu idea: I personally don't use that at all, and like it that way.

that's a good question, I've never tried to do that, but perhaps in the menu: Format->Styles->Maple Plot, not sure what you can do with that, I haven't experimented, worth a shot though.

that's a good question, I've never tried to do that, but perhaps in the menu: Format->Styles->Maple Plot, not sure what you can do with that, I haven't experimented, worth a shot though.

@bthur 

thanks Bryon, that's what I was looking for,

 

Green up arrow, Green up arrow, Green up arrow, Green up arrow, Green up arrow, ... hopefully I'll remember that next time...

nothing there:

http://www.mapleprimes.com/filemanager

not today, not yesterday, temporarily down or permanently?

Also I couldn't find any link to the file manager on the main mapleprimes page, I bet it's there but wherever it is it's not obvious to find unless you know...

I think it was once possible to upload a file on the fly by clicking on the Insert/edit image icon (above, left), but that doesn't seem possible anymore, right?

thanks,

@Robert Israel 

thanks Robert,

for n an integer, 1e+n is a float, I didn't realize that, I thought it was just a fancy way of writing 10^n...

thanks pagan, very useful tips, will probably use them for quick plots.

I have recently started using the standard GUI, as the classic GUI is falling behind with every new release. I've got 7 cores or whatever but it's painfully slow to load...

thanks pagan, very useful tips, will probably use them for quick plots.

I have recently started using the standard GUI, as the classic GUI is falling behind with every new release. I've got 7 cores or whatever but it's painfully slow to load...

I'm using Maple14 and both max(L) and min(L) work, where L := [1,2,3]; your wishes were granted Doug ;-)

I'm using Maple14 and both max(L) and min(L) work, where L := [1,2,3]; your wishes were granted Doug ;-)

@Deadstar 

fsolve is for numerical solutions, so yes it is more appropriate here.

@Deadstar 

fsolve is for numerical solutions, so yes it is more appropriate here.

once you have set up the g function properly (check that it replicates your calculations for low values of the Taylor series), you may want to write a proc that would compare coefficients and solve for them, there are hints on how to use memory allociation efficiently here, may be helpful:

http://www.mapleprimes.com/posts/98790-Subvectors-As-Arguments

once you have set up the g function properly (check that it replicates your calculations for low values of the Taylor series), you may want to write a proc that would compare coefficients and solve for them, there are hints on how to use memory allociation efficiently here, may be helpful:

http://www.mapleprimes.com/posts/98790-Subvectors-As-Arguments

@Deadstar 

yes you're right, I changed the Ns into ns as an afterthought, not remembering what I was doing a minute earlier.

The first step, I think, would be to write your functions in the general format, to make use of seq. I don't know if this will be efficient, but it's worth a shot.

so you've got a very general function of x, f,  with coefficients a[i], and then another function of x, g, with coefficients that are complicated functions of the a[i], and you want to equate some of the coefficients (not all, since you are neglecting higher terms), does the following compute the desired functions and coefficients? I may not have properly set up g, please check.

N := 6: Order := 3*N: #just to make sure we're not truncating too soon
f := (x,n) -> 1 + add(a[2*i]*x^(2*i),i=1..n):
g := (x,n) -> convert(series( f(f(x*f(1,N),N),N)/f(1,N) ,x ,n ),polynom):
seq(a[2*i]=coeff(g(x,N),x^i),i=1..N);

then something like the following should solve for the coefficient-equations.

solve({%},{seq(a[2*i],i=1..N)},AllSolutions=true);

Once that is set up properly, you may want to set N as a variable and use seq to increment over N

The best would be to spot a "formula" (recurrence for instance) linking the a[i]s.

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