i have Maple 12 Student edition. when i do a 5th intergration, and eval at Pi, i get a complex answer. how would i get it to display a rational answer ? h := t-> (1+t^3*cos(t))^(1/5); ((D@@5)(h))(Pi); evalf(%); simplify(%); -.1245723200-0.905070854e-1*I D1 := D(h); D2 := D(D1); D3 := D(D2); D4 := D(D3); D5 := D(D4):fsolve(D5(Pi)); -.1245723200-0.9050708540e-1*I thanks

I'm trying to eventually make some 3d plots of some finite fields and different operations on them. Unfortunately I need some way to restrict the input to integers since apparently floor-ing them isnt enough. Heres parts of my worksheet, if it helps: G := GF(2, 8, x^8+x^4+x^3+x+1) `&*` := proc () options operator, arrow; G:-output(G:-`*`(map(G:-input, [args])[])) end proc f[1] := proc (a, b) options operator, arrow; `&*`(floor(a), floor(b)) end proc > plot3d(f[1](a, b), a = 0 .. 255, b = 0 .. 255); %;

How do I create a button that performs multiple actions? For example, I might want to create a button that both differentiates and integrates a function with one click. So far, everything I have tried has resulted in evaluating the last action in the list.

Thanks.

Cloyd

Hello I'm working with some finite fields(2^8) and sometimes instead of viewing/working with a polynomial its easier to work with a number. Its easy to convert from polynomial to number by just letting x=2, but is there a easy and built in way to go the other way? Thanks

Hi,

I am using Maple 11 and trying to solve numerically the following easy system of 1st order, linear PDEs:

I have a set for which I want to multiply each value by a sequence.

The only way I know how to do this is to convert set->list, apply the sequence, Flatten and convert list->set.

The problem is that Flatten stops working when the list becomes large. Suggestions?

I've been trying to vreate a script which will provide the roots of the Bessel function of the first kind, and it's derivative.

 

The root of the Bessel itself is fairly straight forward, simply BesselJZero(m,n); however, I can't do the same for the derivative diff(BesselJ(m,n),n).

 

Any help would be appreicated.

I am using dsolve to integrate a system of equations, and I am using stop_cond to stop the integration when certain conditions are met.

The problem is, I want the integration to stop when condition 1 AND condition 2 are met, but when I use, for example

stop_cond=[y(t)-2,t-4]

it stops as soon as ONE of these conditions are met, not both. I want it to stop when y(t) is equal to 2 AFTER t=4, not before.

Any suggestions would be greatly appreciated!

 

Hi, i just want to write this equation im Maple,  how do i do it ?

 

 

 

thanks

Hi

I'm trying to find all solutions to a system of polynomial equations. I've tried using Isolate from the RootFinding package and for some choice of parameters this works well. However changing the parameters (i.e changing some of the coeffients of the polynomials), I get the error message.

Error, (in RootFinding:-Isolate) decreasing address previous=1e0f0020 new=10010020!

Any ideas on what this means?  possible ways around it? or other functions in maple that would give me all solutions?

Thanks, Steve.

 

View 127_phase coloring.mw on MapleNet or Download 127_phase coloring.mw
View file details

I am trying to color  3D plots according to phase using color=argument(x)/Pi/2

I get different results depending on the form I enter the expression x, as shown on the worksheet. Any suggestions to make this consistent?

I am missing the F1-help to work properly after highlighting words
at least for the following

invfourier ---> completely missing (it is in inttrans)
invlaplace ---> completely missing
invmellin  ---> completely missing
fourier    ---> MTM[fourier], but not inttrans

Parts      ---> completely missing (expect it in IntegrationTools)
Flip       ---> ImageTools[Flip], but not...

I was testing if Maple can prove/show limit(a*(1-F(a)), a=infinity,left)=0, where F(.) is a general cumulative distribution function. Though, I doubt Maple has the ability.  However, I come across with some other questions during the exploration:

1. how is maple exactly doing to find limit:
Let's first try a normal distribution case:
 

with(Statistics):
U := RandomVariable(Normal(s,t))  :
limit(CDF(U,x),x=infinity,left)  assuming t>0,t<infinity ;

Is there an explanation on how each of the different paragraph styles work?

I was experimenting the other day and some selected paragraph styles don't allow you to type any text at all.  Couldn't find anything in the help pages, or I might have just been looking in the wrong area.

Hi to everybody.  I have to manipulate a system of partial differential equation,one by one.I have in particolar to derive a lot of time my differential equations(shallow water equations),and then to group, to substitute and at the and I need time derivative in function of spatial derivative.

I'm almost done. The problem is that now every time that  I execute a command it takes  a lot of time. The entire file takes some minuts to compile. It's so slow.