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Dear experts,

 I want to extract the coefficient of z^k from an infinite series summation (known as probability generating function or characteristic function or Z-transformation) , the co-efficient is actually the probability of the R.V. will take value k.

Next problem in the same question is the summation is not working if I sum from 0 to infinity. It is working from 0 to 300.

I have attached the PDF for expressing the problem and the Maple code. I have used convert...

I want to now how to convert from maple to letec


In the final line, my output is in the form of tau-c*z. How do I switch the tau-c*z back to 
zeta, because I want to integrate T with respect to zeta.
Thank you. 
> restart;
> with(plots);
> U := V(zeta)*exp(I*(k*tau-w*z));
> zeta := tau-c*z;
> Uz := diff(U, z);
> Utau := diff(U, tau);
> Utautau := diff(Utau, tau);
> P := convert(U, trig);
> A := abs(P)^2;
> B := evalc(A);

Hello all together,

defined is a curve C by the function:


Now i have to convert the description of the curve in the parametric representation and plot the graph.

My problem is, how i should handle the a in the function?


Thank you very much,



I have to generate F(x) of a function with a degree of 5 who has zeros of x=2,x=1+3i,x=2-4i

After i put it into maple i use the command expand to give me the total function but afterwards i get this 144*i^4*x-25*i^2*x^3+x^5-288*i^4+118*i^2*x^2-8*x^4-188*i^2*x+25*x^3+104*i^2-38*x^2+28*x-8

i need to know what command can i use to get it to converts i^4 to 1 and i^2 to-1 that way i can truly simplify it. 

Hi guys

Is there any build-in function which converts [[x>5, x<10], [x < 0]] to "x>5 and x<10 or x<0"? I've written my own function, but I want something build-in.

Thanks :)


See the code mli.mws

What is the mistake in this command ?

chfonc:=cat('piecewise(' , seq(cat(convert(t<lf[k],string) , ' , 1 , ' ,convert(t<lf[k],string), ' , 1 , ' ) , k=1..p) , '1) ') :

if the tolerance can only accept gamma function, rational function

How to convert Kummer expression into other simple formula?

i have calculated a generating function, but the actual answer is much simpler than this

Gen := {p(z) = exp(-I*z/sqrt(c))*KummerM(-(-(1/2)*sqrt(c)*beta+(1/2*I)*beta*c+I*(-1/2+c)*x)/sqrt(c),
beta, 0)*_C1+1)+exp(-I*z/sqrt(c))*KummerU(-(-(1/2...

how to override Array type? Want workaround next behaviour for float array:


Error, unable to store 't^(4/9)+2^(1/2)' when datatype=sfloat

i.e. to call convertor before assignment. Can i principally to do so?

And yes, no hfloats. I need sfloat. Sow in help that some types could be created like objects (stack, queue etc).

I converted an ode using the built-in "convert" tool to check some calculations I had done by hand. To my surprise, there was an inconsistency. I converted the ode using PDEtools[dchange], reproducing the steps I had followed manually, and they checked out. So my question is: is there a sign error in convert? (and therefore a bug) or are both conversions correct, and if so are there any lessons to be learned? (is it related to the equation's symmetries?)

Thanks for your comments.


However, this does not work.

My problem is not to plot U as a function of time, but somehow convert the function.

I mean, in Your solution U is defined through X(t) and thus Maple is evaluating the solution for DE every time the U is called.

However I would like to have U as function of t without precense of X(t). Since X(t) is a known procedure, there might be the way to explicitly define U as a function of t only, after the evlauation of procedure X(t).

a long equation has many Ei

how to convert into Gamma function using below identity

Ei(a, z) = z^(a-1)*GAMMA(1-a, z);



I have four old Maple 10 Worksheets sitting around my harddrive. I'd like to view them again, but my Maple 10 license won't be activated again, they tell me to buy a new 13 or 14 one.

Does anyone still have a Maple 10 (or compatible) version and would convert four small worksheets into PDF for me?


Hey there, this is my first post here, so hello to everyone.


I have (so far) one question. I have a circle equation like


I know, that on a paper, I can convert it to the "normal" circle equation, from which I can read the middle point and radius of the circle. And now my question is, how to convert in in maple? I am using the 11th version.


I have tried solving this equation and (x-a)

Hi there


I have, for a while, been trying to find a way to force maple to display the unit im inputting. 

Im studying to be an engineer, and for an example the unit i often would like displayed is kilonewtons per square metre (kN/m2). 

Once i hit enter, maple converts it to Pa, which isnt really usable for me ... 


The question is, is there any way to stop maple from doing the conversion in output......

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