Hi!

I have a system of equations like this:

and I wrote this equations into maple in this way:

eqns := [diff(x(t), t) = -x(t)-y(t), diff(y(t), t) = x(t)+.25*y(t)+r(t), diff(z(t), t) = 3+x(t)*z(t), diff(r(t), t) = .5*z(t)+0.5e-1*r]

using DEplot3d I tried to drawing attractor diagram:

This is my problem: i've an nonlinear system of six equations and i find the solution with Runge-Kutta: for every t>0 i've x[1](t), x[2](t), x[3](t), xc[1](t), xc[2](t), xc[3](t). I write this solution in the vector "solution" > solution:=dsolve(... Yet i've also another equation ("EQ7") of the type: EQ7 = f(xc[1](t),xc[2](t),xc[3]) with xc[1],xc[2],xc[3] presents in &q

Hi, all,

 I checked all the information of Groebner Basis in maple, and I cannot find how to compute Groeber Basis over Galois Field, for example how to computer Groebner Basis over GF(2^4)?

 

Thank you.

I'm running OS X 15.5 and have just installed Maple 12. I cannot figure out how to get this thing to launch. If I attempt to launch Maple from the surface in the applications folder, the Maple icon bounces once on my desktop and then -poof-, it disappears.

 

I have also tried running it from the command line thus and received a permissions error:

dhcp0918:~ emcdowell$ /Library/Frameworks/Maple.framework/Versions/12/bin/maple
-bash: /Library/Frameworks/Maple.framework/Versions/12/bin/maple: Permission denied

and have also tried this:

I use Maple 12 on a Macintosh platform. When I press command+ t   I switch to text mode. How do I switch back to 2D math input using the keyboard? Thanks in advance !!

Hello everyone,

In plotting a function with discontinuities such as y = tan(x), I know that using the plot options "discont=true, scaling=constrained" allows for normal plotting with vertical asymptotes.  But how do I do with with plotting a curve given by parametric equations?  My curve has a skewed symptote and I can't get my plot to show this.  It just "blows up" and the scaling goes to infinity.  

 

Thank you, anyone, for your help.

 

        David

Hello All, I read some other posts on "stack limits" and they were not too helpful. In a particular case there seemed to be a bug, as stated by a Maple kernel developer, but I can't imagine that being the problem here. I have a MacBook Pro (Intel) using Maple 11.02 with 2GB of RAM. The following code displays the stacklimit eror causing a failure with the kernel connection whenever I try to simplify the last line. Does anyone have any ideas? Thanks much, Steve. P.S. Here is the worksheet lines: restart one := 1/((x*Dd-x^2*Dcj)*sqrt(x^2-1))

I have two column matrices that I have imported into Maple from Excel (an 'x' and 'y' matrix). The algorithm I am using (that attempts to fit a circle to the data) requires the points to be in an array of the following format:

pts:=[[x1,y1],[x2,y2]...];

How can I run a loop, or other application, to pair the respective pointsto each other in an array such as the one above?

Thanks for any help.

I am looking for some practical advice on how the cool kids split a Maple worksheet across multiple files. I have been reading through the help sections on procedures and modules, but most of the information is for self-contained sections of code in one file. I have come across some info in the help sections on using multiple files, but I am hoping to find out if there is a standard, recommended way of doing this.

How I can write a procedure to explore boolean matrix??

Hi, have a problem with expressions of the following type: -s^3*t^2+t^2*s+t*(1-s*t-s+s^2*t)^(2/5)*(-1+s*t)^(3/5)*(-1+s)^(3/5)*s+s*t+s-1-t+(1-s*t-s+s^2*t)^(2/5)*(-1+s*t)^(3/5)*(-1+s)^(3/5)*t+(1-s*t-s+s^2*t)^(2/5)*(-1+s*t)^(3/5)*(-1+s)^(3/5); Using simplify does not work. However, when I manually collect all terms with fractional powers so that the expression becomes -s^3*t^2+t^2*s+t*((1-s*t-s+s^2*t)^(2)*(-1+s*t)^(3)*(-1+s)^(3))^(1/5)*s+s*t+s-1-t+((1-s*t-s+s^2*t)^(2)*(-1+s*t)^(3)*(-1+s)^(3))^(1/5)*t+((1-s*t-s+s^2*t)^(2)*(-1+s*t)^(3)*(-1+s)^(3))^(1/5);

I am trying to extract numerical data from the following plot? > data := plot({H85, H95, H97, H99}, t = 0 .. 25) H99 for example is a function like this: H99 := (0.8375209380e-2*exp(0.9949999999e-1*t)+19.99162479)*exp(-0.9949999999e-1*t) Could someone please help me out... thanks

Hello, this is my first post here and I'm relatively new to Maple. I'm using version 10 (fully updated) and have been struggling for the better part of the past two days with what should be a simple fix. I have two functions which I am equating, and then using Solve to put it in terms of one of the variables. Maple is consistently, and for a range of different functions, returning incomplete solution sets. Sometimes it is aware the set is incomplete whereas other times it is not, returning only a single result where there should be two (or more).

Hi all

I need to Solve an expression of this kind:

N=sum(  z / (1-e) ,j=1..infinity)

where N and c are given numerical constants;

I need to obtain a function z(x) to plot another function F( z(x) , x ) in function of x

solve( N=sum(  z / (1-e) ,j=1..infinity), z)

that gives me "warning:solutions may have been lost"

if i try to evaluate the sum, it freezes my computer just for the first 25 terms...