You are only able to delete one of the Subsystems from that list if that subsystem is not in use anywhere in you model.  If this is the case, just right click on the subsystem and select "Delete".  If that subsystem is being used in the model, you will get a warning and you will not be able to delete it.

-Scott

Could you try the steps found in this help page: http://www.maplesoft.com/support/help/view.aspx?path=Change%2fCharacterstyle

-Scott

Have you tried asking Maplesoft Technical Support?  It is possible that they may have come across this before and have a solution for this.

-Scott

You should be able to do this by executing the following command

>map(IsDefinite, Hmatrix, 'query' = 'positive_semidefinite');

Scott

Try entering the following:

> solve(r^3=1/64);

Scott

When you call the plot function (for example plots[matrixplot] since you have a matrix) you can use the tickmarks option.  You can either use the spacing option if you want the tickmarks to start at 0 and use a certain spacing.  If you want tickmarks at a certain spot, you can include the list of locations for the tickmarks.  To make this list easier, you can use a seq command to create the list.  For example  if you have the following:

>with(plots):
>with(LinearAlgebra):
>A:= HilbertMatrix(8):
>matrixplot(A,tickmarks=[spacing(2),[seq(i,i=0..8,3)],default],axes=normal);
 

In the above example, I have a spacing of 2 along the x axis, but specified tickmarks at [0,3,6] along the y axis and keeping the default tickmarks on the z axis.

Was there a typo for your spacing in your question when you wanted the range from 0.25 to 2.5 with a spacing of 2.5?  Did you mean something like 0 to 10 with a spacing of 2.5?

Scott

When writing this procedure, try writing it using the 1D math input.  You can easily switch between modes by clicking the F5 key or click the "Text" button near the top of the screen.  If you have already written out the procedure in 2D math, you can right click select

2D Math> Convert To> 1D Math Input

Scott

What are you looking to do with the IP packets once they are brought in?  Are you looking to connect to the internet to get information (something like what this blog was talking about www.maplesoft.com/blog/view.aspx)?  Or are you trying to simulate this for testing different tests?

MapleSim will not be able to simulate the SIGTRAN layer.  This software is more for mechanical, electronic, thermal or controls systems for V1.

Scott

How did the Maple installation go?  Did you install it with the same user account as you are using now?  And does this account have Admin privileges?

Scott

Once you have highlighted the components you would like to have in the subsystem, just click Ctrl+G on your keyboard (or go to Edit > Create Subsystem from the menu).

Scott

Could you please let us know what operating system you are trying to install on?  Also, are you installing from a CD or from a file that you downloaded?

Scott

The following code will do what you are looking for:

>with(Statistics):
>mu[1]:=0.5: mu[2]:=-2: sigma[1]:=1: sigma[2]:=1:
>R1:=Sample(RandomVariable(Normal(mu[1], sigma[1])),1000):
>R2:=Sample(RandomVariable(Normal(mu[2], sigma[2])),1000):
>K1:=select(type,convert(R1,list),positive):
>K2:=select(type,convert(R2,list),positive):

I have changed to using the Statistics package instead of the deprecated stats package.

-Scott
 

If you define V as you typed it in, you have created a list, so you can use the ListTools[Search] to find the first occurance of the maximum, or you can use ListTools[SearchAll] to find all the occurances of the maximum number.  So the following should work for you:

> V:=[1, 4, 8, 2]:

> max(V);

>ListTools[SearchAll](max(V), V);

Scott

I don't think the answer with the [ ] brackets are correct.  The brackets are used for other cases like creating lists or accessing elements of a object (table, list, Matrix, etc).  I believe what you are looking for is something like the following:

eqn:=Diff(x3(t), t) = 2*lambda*a*(1-p)*(x1*(x1-1)+x2*(x2-1))-2*a*p*x3(t)*( x2+2*(x3(t)-1))+(-2*delta*x3(t));

> dsolve(eqn);

Scott

One option to get this to work is to use the following function (assuming those capitol Ys were a mistake):

y*diff(x(y), y) -x(y) = y^3*(diff(x(y), y))+y^2*x(y);

When you enter the above, you can then right click on the result and choose the "Solve DE Interactively".

Scott