I worked a problem in my textbook using maple.I define two differential equations sys1:=[dy/dt=...,dx/dt=...] and its linearize point lin_point:=[...],then using linearize command,I obtained a state space description of the system.Now,I want to using state space description to get transfer function of the system,how can I do it directly without retype the state matrices a,b,c,and d manually?  

Thank you!

Hi,

i have a loop as follows

for i from 0 to 10 do
>
> y:= i/2;
>
> f:= 2*x+y;
>
> plot(f,x);
>
> end
> ;

i want each graph with different color depend upon the value of y. in other mean, for each value of y, the color of the graph is defferent. 

could you help me in this problem?

I have used the FourierTransform command in Maple 14 and I have identified high frequency content in a signal (data collected).

I would like to filter out the high frequency content but I cannot find a command which does that and nor could I find a post about doing so.

There is a package, HarmonicAnalyses, for sale, which I could purchase.

Is there anyway to do this with Maple 14?

Would the Harmonic Analyses package do what I want? 

Hi There,

I'm having a problem trying to solve the folllowing system of PDEs.

PDE1:=diff(P[e](x, t), t) = 5e(-5)*diff(P[e](x, t), x, x));

PDE2:= diff(P[s](x, t), t) = 5e(-10)*(diff(P[s](x, t), x, x));

IBC:={5e-5*(D[1](P[e]))(0.2e-3, t) = 5*10^(-10)*(D[1](P[s]))(0.2e-3, t), P[e](0, t) = 1, P[e](x, 0) = 0.1e-1, P[s](0.215e-3, t) = 0};

Sol:= pdsolve({PDE1,PDE2},IBC,[P[e](x,t),P[s](x,t),numeric);

Error, (in pdsolve/numeric...

Since Maple 14 requires a new version of the license manager (which isn't downwards compatible for some reason..), I'm currently trying to figure out how to run two versions of maplelmg on the same Linux host, one for Maple versions 13 and below, one for 14 (and above).

Of course, this would have to happen either on different ports or another IP on the same host, which doesn't really bother me, the problem is that I cannot start two maplelmg's on the same host because...

I'm in a calculus course in college right now and my professor wanted us to buy a copy of Maple, so I did.  I bought it for my Mac, but the software seems to be having trouble with basic operations, like adding, subtracting and multiplying.  If I were to try and add 2+3, for example, I can type in "2," but then when I try to type in "+," it deletes the two instead and freezes the Maple program itself.  I have no idea what's going on.  PLEASE HELP!!!

Hi,

I have this procedure:

f := proc(x) if x < 0 then x^2+1; else cos(x); end if; end proc:

When I calculate NLPSolve(f,-Pi..2*Pi); the result is good. In NLPSolve, f(Pi) or f(-Pi) are also calculated.

When I want to determine f(Pi), I have this error code:

Error, (in f) cannot determine if this expression is true or false: Pi < 0

Why ? 

I must change my procedure with adding "evalf" to get a result for f(Pi):...

Hi, I am new to using maple. For one of my classes we have been asked to find the root of a function using the bisection method. The function I am trying to find the root for is x-2^(-x) for 0<=x<=1. This is the sequence of commands that I am using

 f:= x-> x-2^(-x);

a:=0; b:=1;

 while b-a> 0.00001 do

      m:= (a+b)/2:

      if f(a...

Hi

The example below is the same as my code:

restart:with(Optimization):f:=(a+2*b+c*d)*sin(wr*p*t);

fmoy := p*wr*(int(f, t = 0 .. Pi/p/wr))/Pi;

fmax:=NLPSolve(f,t = 0 .. 2,a=1..5,b=0.1..0.5,c=0.4..0.8,d=10..20,wr=200..300,p=5..20,maximize);

fmin:=NLPSolve(f,t = 0 .. 2,a=1..5,b=0.1..0.5,c=0.4..0.8,d=10..20,wr=200..300,p=5..20);

Taux:=NLPSolve((fmax-fmin)/fmoy,t = 0 .. 2,a=1..5,b=0.1..0.5,c=0.4..0.8,d=10..20,wr=200..300,p=5..20);

As shown in the image bellow. The first statement of fsolve function yields nothing but evaluating the expression. I copied the expression into the second command line and got the result. How can I make the first one works, since it belongs to a proc in my program. 

Hi

I have some difficulties in manipulating matrices in Maple

For example, I have a matrice with 40 rows and 9 columns ans I want to extract the odd rows taking columns inchanged. The new matrice which has 20 rows and 9 columns must replace the old matrice

In Matlab, I do this with only one command: WTable=WTable(1:2:40,:);

Thanks in advance for help

Hello,

I am just now learning how to use Maple and I am having trouble turning Ohm's Law into a function.

Here is what happens when I try to turn Ohm's Law into a function.

V_rms:=(R,I)->R*I

       Error, invalid operator paramet name (and then it puts a dotted red line box around everything to the right of the equal sign)

What really irritates me is that I can type

Hi

In matlab we have this command:

I = FIND(X) returns the linear indices corresponding to the nonzero entries of the array X.

[I,J,V] = FIND(X) also returns a vector V containing the values that correspond to the row and column indices I and J.

Is there a command in Maple like "find" in Matlab

Thanks in advance

Hi,

imagine I have the following line:

(y/2)*(4/3)*sin(x);

can I tell Maple not to merge everything together? I want to have it all seperated, like a separate fraction for y/2 another for 4/3 and then comes the sine, with small spaces between them, indicating multiplication.

thanks.

I have a maple worksheet with 2d input:

> for i to 10 do f := proc (x) options operator, arrow; x^2 end proc; f(x) end do;

of course it looks "pretty" in the actual worksheet.

When I export this to Latex I get the standard stuff and this:

\begin{maplegroup}

\begin{mapleinput}

\mapleinline{active}{2d}{for i to 10 do f := proc (x) options operator, arrow; x^2 end proc; f(x) end do; -1}{\[\]}