MaplePrimes Questions

Hi Dears,

I'm have a code like this:

sum(-GAMMA(k+1, x), k = 0 .. -2) and Maple give me : Ei(1, x).

How to check that answer is correct?

 

Thank you in advance.

I am looking forward to hearing from you.

Hi, i try resolve this equations numerical for the boundary between the spinglass and ferromagnetic phases:

 

how?

Regards.

 

 

Hi

I have the ODEs: x'=x

ode:=diff(x(t),t)-x(t);

 

sketch the phase space and extended phase space of previous ode.

 

theta := a-(1/2)*beta*a*y^2+(1/24)*beta^2*a*y^4-(1/720)*beta^3*a*y^6+(1/40320)*beta^4*a*y^8-(1/3628800)*beta^5*a*y^10+(1/479001600)*beta^6*a*y^12-(1/87178291200)*beta^7*a*y^14+(1/20922789888000)*beta^8*a*y^16-(1/6402373705728000)*beta^9*a*y^18+(1/2432902008176640000)*beta^10*a*y^20-(1/1124000727777607680000)*beta^11*a*y^22+(1/620448401733239439360000)*beta^12*a*y^24

Pls, anyone with useful informations on how to convert a series just like the one above to trigonometry or hyperbolic form. Need response as soon as possible. Thankin you in anticipation for your favorable response. 

hello,I want to solve a quesstion about heat equation,that the quesstion like this:

I use the code like this

but the results is wrong obviously and what's wrong with this code?

anxious for your help,thanks.

 

 

hi

how can i plot a 3d polygonal cylinder for example a hexagonal?

Hi Dears,

I studied the concept of Grobner bases and some algorithm for computing them. I understood that the computation of grobner bases is related to the term ordering. Also, I knew that LEX ordering is very expensive. So, it is good idea to use the Grobner basis conversion algorithms such as FGLM and Grobner walk algorithm. Now, I want to know concerning the complexity of these algorithm (Buchbergers algorithm, F4 and F5 algorithm, FGLM algorithm and Grobner walk). I hope my question be appropriate in this site,

Thank you in advance.

I am looking forward to hearing from you.

 

Hi

Any help will be appreciated

I have a continuous time dynamical system

x in R ( set of real number)

t  a positive real time

and the function f_t(x)=x-t

How can we plot or sketch their behaviour in the phase space and in the extended phase space

 

Many thanks

 

 

Hello Guys,

I am having a problem plotting a graph from some sets of point. Please how do I plot a graph having some set of point.

Thanks. 

Dear friends:

I am facing to search the command which zoom a sactor of graph, I know it can be done by using maple tools whose present tool bar but I need a command for zooming please help me to fix this problem (attached) I want to see th sactor eta=0.8 to eta=1.2.

graph_phi_varies.mw

Please see the problem and correct as soon as possible. I am waiting your positive respone.

Muhammad Usman

School of Mathematical Sciences 
Peking University, Beijing, China

 

Greetings to all.

My apologies if this is a repeat, I could not ascertain if this question has been asked before. I am not able to enter a tilde in my home page URL in my profile. I used the escape sequence %7E as a workaround. This does not work in all browsers however, e.g. the page displays correctly in Chrome but not in Firefox. How to enter the tilde into my profile URL? (The tilde is commonly used to indicate the directory public_html in a user's home directory by the Apache web server.) Thank you.

Marko Riedel

Is there are way in maple to check if two expressions are equal for certain intervals for each variable?
I tried to create a formula to give me some propabilities in a card game scenario. I used two different methods to find it, and ended up with these two formulars that seems to give me the same results, but I don't know how I would go about showing by hand if they are equal.

All variables are whole numbers.
I added a picture with the variable intervals and the two formulas.

Not used to these kind of notations, so tell me if anything is unclear.
Thanks.

 

Find x  for which the path (on the real line):
        b -->  x -->  a --> x --> d --> b

has a minimal length.
Perhaps through the Repetition Statement (for...while...do)

 

 

For the space curve in the linked worksheet, RadiusOfCurvature and Binormal give incorrect results. Why?

TNB_anomalies.mw

Please tell me if the above link doesn't work.

A man starts from "b" and go to the point that we have to find, later he goes to "a", later to "d" passing to The Point that we have to find, and finally he comes back to "b".

I have to find the point that optimizes his movements.
How can I do? Is there any specific command?

Thanks in advance
Enrico 

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