Maple is slowly driving me insane. I look at probobly 15 cloud storage solution and I found
one that support http (OwnCloud on Red Free Hosting (free)). The rest uses https.

So I upload my file (see working link below)

http://marcusdavidsson.redfreehost.com/owncloud/public.php?service=files&t=71ff3b85a3d4353e1dd60a49a6e6250f&download

Hi,

I have a set of points defined for XX[j] and YY[j] where j=1..16,

I'm beginning to write a loop for these values and I was wondering how to get the actual numerical values in to say the following...

GX := proc (j)
local YY, XX, G;
G := (1/2)*(YY[j]-YY[j-1])^2/(XX[j]-XX[j-1])+(1/2)*(YY[j+1]-YY[j])^2/(XX[j+1]-XX[j]);
diff(G, XX[j]) end proc;

Then - for example - for GX(4), this gives an output in terms of XX[4], XX[5], etc but I'd...

I am done with my code but in the end my matirx B contains values in worng order. In matrix B am having row values in column and column values in row due to which my graph is not in correct form. What should i do to change these values..?? Attaching worksheet let me know. Thanks
code_for_neuman_1d_h.mw

Hello,

for my mechanical engineering studies we have to optimize an engine during a workshop. Therefore we have to use a numerical dsolve to solve the equation of motion. I have to get the maximum bearing reaction for a constant rpm. In order to get this I can't think of anything else but use the dsolve solution and use it in maximize.

ysk_2 := t -> -rc*cos(phi(t))-lp*cos(alpha(t))-lkb-y(t);
ysp_2 := t -> -rc*cos(phi(t))-lp2*cos(alpha(t))-y(t);

Looking at the new group theory facility in Maple 17 Help, the DrawCayleyTable( H ); does not display correctly

i have 12 second order non linear coupled partial differential equations (Euler-Lagrange Equations) in 12 variables {u1a(x1+l/2),u2a(x1+l/2),u3a(x1+l/2),theta1a(x1+l/2),theta2a(x1+l/2),theta3a(x1+l/2), u1p(x1,x2),u2p(x1,x2),u3p(x1,x2),theta1p(x1,x2),theta2p,theta3p}

also there are 17 lagrange multipliers in these equations which are also to be solved, using 17 constraints equations.

along with 48 boundary conditions. These have emerged out of variational formulations

Hi,

I've been trying to manipulate the equations of a mechanism that I've exported from MapleSIM.  The system equations contain 4 differential ordinary equations, and 6 algebraic equations.  In MapleSIM it simulates fine, but I'm having problems simulating it in maple alone (without multibody exports).

I've tried solving the initial value problem by replacing all the time dependant variables with constants, (and as this is a dynamics problem) I supplied...

The expression below is not producing any plot, although the axes and sliders are set :

I have a Mma code from a colleague that I am trying to port to Maple. This code uses a lot of Mma With[{...}, ...] constructs, to which I found the Maple "use ... in ... end use" construct the closest equivalent. What is being done is to initialize a bunch of local variables and then run the calculations. Non-initialized variables (the ones not in the first section) remain global.

I ran into a problem in Maple when I tried to initialize an element of a Vector, like "use a[1...

When I use Openmaple with C#, if the command line involves "MapleEngine.StopMaple" or "restart", or the command line including "MapleEngine.EvalMapleStatement" is executed twice (sometimes more), it always cause a crash. Can anybody help me out with this problem? Thank you in advance!

The following is the crash report:

unhandled System.AccessViolationException
  Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

i'm using maple 15 and trying to solve the following PDE without success, can you help please.

(ab+(a*sin(x1))^2-(c*cos(x1))^2)*d/dx1(V(x1,x2))=-dsin(x1)/exp(x1).

where a,b,c and d are constants. and i need it to be solved as a PDE please.

thank you,

Mutaz

hello,everyone,
I have a problem to make a figure, commands are below:

restart;
1+(2*(S1*e2/(S2*e1)+S2*e1/(S1*e2)))*tanh(S2*k*d);
S1 = sqrt(beta^2-e1), S2 = sqrt(beta^2-e2);
e1 = 4, e2 = -19-.53*I;
subs(`%%`, %, k = 2*Pi/(0.633e-6), `%%%`);

I want to plot the relation between d and beta(real part named betar and imaginary part betai),but meet some trouble.
I got some points from the article is when d=400e-10, betar in the range (2.1,2.2...

Is there another way to plot 3d intensity levels in an image?  Using matrixplot takes a long time. 

restart;gc():
with(ImageTools):
with(plots):

a:=Read("c:/lighthouse1.jpg"):
b:=convert(ToGrayscale(a),Array):
c:=convert(b,Matrix):

matrixplot(c,style=point,shading=zhue)

martixplot(c,style=point,shading=zhue,orientation=[0,0])

The operation: 2^29.403243784 gives me 7.0999999820*10^8.

However, using WolframAlpha, the answer is 7.10000000139658667836958142950829925944726171959 × 10^8.

These are 2 different answers. Can someone offer an explanation as to why this occurs and how I can avoid this problem?

Thanks in Advance!

Eddy Liu

Good morning everbody,

I am currently trying to get string and numerical datas from a txt.file but I don't get how to do this.
I have done this in matlab but I would like to make it in maple.
I have read other post about the subject and try tried this command:

 fd := fopen(dataFile,READ,TEXT):
    theData:=readdata(fd,string, 3): # 3 columns
  fclose(fd):

  A:=convert(theData,Array);

but it didn't help me.