MaplePrimes Questions

I do not have any experience with maple and have a homework assignment due tomorrow. I have been staring at a screen blankly for an hour now trying to research how to do this but have had no luck. Here is my problem...

compute the projection of w onto v. call proj w onto v "p" and let q be vector perpendicular to p so that p+q=w. plot all four vectors together.

 

I have no idea where to even begin. I can do this by hand but it's the computer stuff...

Hello.

After using my command FOR --DO (see the commands below of the attached file) I would like that appears only the last graphic ( and not the previous "plot"s neither the matrix ww).

 

How could be done it?

Thanks in advance,

Jean-Jacques.

 

#POUR FAIRE LE "FOR FROM BY TO DO"

max1:=60:
q:=1/2:

for w1 from 1/27 by 7/27 to 1/2 do

ww:= [seq( [n, add(1/(n+1), k=ceil(  max(0,(q-w1...

Hello, I am using maple 7 and I want to find all the solutions to a set of 4 equations with 4 variables.  These equations are all trigonometric.  fsolve of course only gives a single solution and using the avoid unction doesn't work.

 

I have tried to write something like this:

Sol1:=({equations},{vars})

 

Sol2:=({equations},{vars},avoid=Sol1)

 

and this always gives the same solution.  Any ideas?  Thank you.

Hey folks I have a question regarding how to fill an Array.

 

Lets say I do this...

 

Array(1..10, [seq(i, i=0..9)]);

 

This produces [0 1 2 3 4 5 6 7 8 9] as output which is fine.

 

Now lets say I want a 2x10 array (2 rows, 10 columns), the top row being the digits 0-9 (as above) and the second row being something else (in this case it is counting the number of times each digit appears in Pi)

I would like to use Maple to visualize some data produced by a computational geometry application I am working on.  However, my coordinate system is different than a standard cartesian system.  In my case, the positive Y direction is downward.

 

Can I re-orient the Y axis on a point plot to go downwards instead of upwards?

Greetings,

I want to solve the non linear recurrency system:

x[1](k*T+T) = x[1](k*T)+2*u[1]*psi*cos(alpha); x[2](k*T+T) = x[2](k*T)+2*u[1]*psi*sin(alpha); theta[0](k*T+T) = theta[0](k*T)+T*u[2];

with:

psi := piecewise(u2 <> 0, sin((1/2)*T*u[2])/u[2], (1/2)*T); alpha := theta[0]+(1/2)*T*u[2];

and u1 and u2 some functions of x1(kT) and x2(kT).

I tried to use the rsolve command but didn't work.

Can you help me, please? Is there some way to solve this?...

ex1 := {
evalDG( d(x) = w1*e1 + w2*e2),
evalDG(d(e1) = w12*e2 + w13*e3),
evalDG(d(e2) = -w12*e1 + w23*e3),
evalDG(d(e3) = -w13*e1 - w23*e3)
};
ExteriorDerivative(ex1);


> ex1 := {evalDG(d(e1) = w12*e2+w13*e3), evalDG(d(e2) = -w12*e1+w23*e3), evalDG(d(e3) = -w13*e1-w23*e3), evalDG(d(x) = w1*e1+w2*e2)}; ExteriorDerivative(ex1);
{d(e1) = w12 e2 + w13 e3, d(e2) = -w12 e1 + w23 e3, d(e3) = -w13 e1 - w23 e3,

  d(x) = w1 e1 + w2 e2}

Hello,

Is there a way to export a file from Maple so that somebody without Maple can use ? My project is a dynamic one with components that need to be used by the "Reader".

 

Thanks,

 

Yaad

Hi,

I have a rather large output of quotients of polynomial terms in Maple, things like coeffiencient*r^6*(sqrt(1+r^2...)/(1+r^2+r^4), what I have to do at the moment is scan through them by eye taking the large r limits, to see if e.g. an expression goes like 1/r, or 1/r^2 etc at large r..

I was wondering if there is anyway I can automate Maple to scan through the terms for me, systematically taking each limit, and only keeping terms to a certain power in r?

What is the equivalent of

Shift+Tab = move the cursor to the previous region

on linux?? it is listed as working on windowns/macs but not on linux.

Also is there a way to customize keyboard shortucts? I am a vim user and navigating around a document in maple's gui is really painful (by the way I work in the "worksheet" mode)

thank you.

I try to solve the following, but it have the error of singular. can any one help me solve it.

> restart;
> dsys1 := diff(y(x), `$`(x, 2))+(lambda*lambda)*y(x) = 0;
              / d  / d      \\         2        
              |--- |--- y(x...

I have two expression like,

 

exp1:=A1*x*(k-p*x)+A2*x+A3*p+A4

exp2:=A5*x*(k-p*x)

 

where A1, A2, A3, A4 and A5 are some lengthy expressions.

 

I need to find the division of these two, namely exp3

 

exp3:=exp1/exp2

 

in the form

 

exp3:=(A1/A5)+the rest

 

In other words, I need to extract the part which could be normalized by x*(k-p*x).

I need to know how to use Maple to solve group permutaions and Cayley tables

I wanted that the same X-axe represents 1-10, 100-110 and 500-510. I do not know if it is possible to have a kind of X-values that in the same graph shows  the Y-values for the 32 following points: 1,2,..9,10,100,101,..110,500, 501,502,..., 510 . If I consider all interval 1-510, I could not be able to apreciate the graphic.

 

Thanks for your attention Kirnyk.

 

Jean-Jacques

I'm trying to understand shooting method using maple in solving BVP. especially to solve boundary layer flow. I don't have any idea about the step size used and convergence criteria specified in shoot lib in the maple. Can anybody help me with this? Where can I refer to. Thank you

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