MaplePrimes Questions

Hi I have a problem in solving a system of odes with maple,here is a capture(jpg) of my program in maple, http://beta.mapleprimes.com/files/1709_sysode.JPG how can I solve that error? Tanx.
I had three questions, but two were about series solutions to linear ode's, and I just discovered the wonderful Slode package...I learn something new about Maple every single day! I still have one question though... In the help page for the laplace command in the inttrans package, it is indicated that, when transforming ordinary differential equations, initial values can be set and incorporated into the transform, but I haven't figured out exactly how to do this, and I didn't find anything else on the help page. Thanks a lot for any suggestions!
I would like to have labeled axes on all four sides of my 2D plot. I can get them on the right and bottom using axes=normal. I can also get them on the left and bottom using axes=boxed or axes=framed. But I can't get the axes on the top of the plot to show up. Any suggestions?
Hello, I have a matrix (not Matrix) say A = [D+D^2 D^2 D ] [ ] [1 (D+D^2)/(1+D) D/(1+D)] I want to form a matrix B from A such that i_th row of B = i_th row of A * (lcm(i_th row of A) / gcd(i_th row of A) ) How can I get this done ? Regards, Iyer
I want to solve an algebraic system in a non commutative ring: for example {x1+x2+x3=a,x1^2+x2^2+x3^2=b,x1^3+x2^3+x3^3=c}. Can I find a Grobner basis with Maple 10 or with another software (under windows)?????? Thanks.
I know how to make my linestyle into DASH, DASHDOT, etc. But I am trying to an ARROw along my curve. Does anyone know how to achieve this? I have several solution curves to an ODE on the same plot, and they all converge to one line. I would like to have arrows on each of the curves to show that they all converge into this one curve. Any help is appreciated.
intf12 := CurveFitting[PolynomialInterpolation](testfile[1..-1,1..2],z): eval(intf12, z=1); 54 0.1211007603 10 intf12 := CurveFitting[PolynomialInterpolation](testfile[1..-1,1..2],x): eval(intf12, x=1); 53 0.8 10 The only thing I changed was the variable from 'z' to 'x' I tried other names and they also gave me different answers once I evaluated. Is this a bug, known or unknown? Why would simply changing the variable name change the resulting equation?
I'd like to know how to accomplish the following:

I have an implicit equation f(u,v)=0, which maple will happily plot using implicitplot. I would now like to feed the
solution pairs (u,v) into another function g(u,v). How do I extract the solution points from the output of implicitplot and feed them into g(u,v). Let's assume that maple cannot find a closed form expression for v in terms of u (or vice versa) in f(u,v)=0.

Basically, I just want to retrieve the point pairs that make up the curve of f(u,v)=0 and evaluate g along that curve.
I have only used the GUI components in Document Mode, so I suppose that is where I've created my Maplets...I was wondering if there was another place for creating them, like some sort of stand-alone Maplet platform, or if they had to be embedded in a Maple Document or Worksheet. Thanks a lot.
I am installing Maple 10 onto a Mac OS10.3.9 and as soon as I enter my administrative password, the installer dies, and the installation doesn't complete. I have successfully installed Maple 10 on OS10.4. Is there anything I'm doing wrong or any ideas what to check for????? Thanks!!! Lab Manager
I was wondering if maple can compute partial derivatives. Suppose i have the the function z=a*f(x)+b*g(y)+c*x+d*y, can i obtain the partial derivative dz/df(x)=a, or the PARTIAL derivative dz/dx=c. diff(z,x); only seems to give the total derivative: dz/dx=df(x)/dx+c; Hope anyone can help, thanx Rick
Hello, Can someone tell me how to extract the argument of a function like this (assuming theta is real): u:=exp(I*theta); I tried argument(u); with no success I also tried to capture the parameter passed to the exp function like this: subsindets(u,'specfunc(anything,exp)', f->subsop(0=exparg,f)); exparg is a simple function that returns the imaginary part of its argument. It works well but fails for variables like this: v:=I*exp(I*theta); I would expect the answer to be theta+Pi/2 but my function return theta only!
I'm analyzing the following system: Delta[s] := phi*p*(1-exp(-n))-rho*s Delta[p] := xi*(1-exp(-s))*(Lambda-p)-p Delta[n] := mu*Lambda*p*(1-exp(-n))-omega*n I can find solutions with fsolve. Now I'd like to plot the solutions as a function of Lambda. How would I do that? I've tried using f:=Lambda->fsolve(...) without luck. Any help appreciated. [Sorry, no worksheet. File size is 40.3 kb and it looks like there is a 40 kb limit on uploads...]
Hello, I've got the following problem: I want to build a Maplet with the Maplet Builder. This Maplet shall contain a plot, a slider and a textfield. After moving the slider, the plot shall change and at the same time the textfield shall show the value of the slider. Is it possible to assign two conjunctions to the slider at the 'onchange' field? Thanks for helping, Frauke
First off I want to say thanks for answering my previous question. I'm having trouble getting maple to define an array of equal size to a given value, x, and then populate it with the numbers 0 to x. Say x was five, I would need Maple to generate [0,1,2,3,4,5]. Lastly, I need to be able to use each member of the final element individually, so I'm not even sure if I'm having Maple do this in the right manner. So far I've tried: m := proc (n) options operator, arrow; array(1 .. n) end proc; for i to n do m[i] := i end do and all I get is: Error, final value in for loop must be numeric or character.
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