Math Forum

I'm new to maple, and get stuck very easily, just like now is this case.
Perhaps you can help me a little bit.
Consider the following:
Kcl_ni := I_S - G_S*V_ni - s*C_i*V_ni - G_C*(V_ni-V_nc) = 0 :

I have 2 equations:
Kcl_i := I_S - G_S*V_i - s*C_i*V_i - G_C*(V_i-V_c) = 0 :
Kcl_c := G_C*(V_i-V_c) = s*C_C*V_c :
Out of these equations V_c must be eliminated.

When running maple in text mode I experience the following problems:

I was wondering if there is a way to compute the discriminant of a
rank r quadratic form in maple?
Alternatively, is there a way to diagonalize, via symmetric row and
col operations, a symmetric matrix A over Z_p? For instance, modifying

MATHS- some children seen this as boring and hard, some like it but
need more encouragement and motivation….and some really love it.  What
makes this different…perception or ability or the subject itself?
MATHS is a very exciting subject if we know the tactics and the fun

Dear List:
I made a package with a function that has a minimization. The minimization
returns, as should be, the value of the optimization, and then the values
of the variables, in the form {z1->10,z2->20,z3->50}.

I am no expert in Mathieu functions, but I don't think this gives the right result:
ce1[r_, q_, z_] := MathieuCPrime[MathieuCharacteristicA[r, q], q, z]
Plot[I ce1[3, q, I], {q, 0, 1000}]
In another system you get a smooth graph, making very small oscillations about zer o as q ...

I have been struggling for a few days to figure out how to estimate parameters in coupled ODEs when the results from the ODEs are used as input for the model in FindFit.
It is a relatively straightforward mass transfer problem, with 2 components (NinWater and NinCPA1). These ...

Is there a keyboard shortcut to add an equal symbol aligned math cell
(or a marker aligned or centered math cell) to a notebook. I can only
find it in the writing assistant pallette
I couldn't find anything relevant in teh  documentation center

I have frequency,voltage, and epsilon data as three columns.
I need to plot this in 3d plot so that frequency in log scale.
looking forward...
Thanks..

hai,
    I would like to know how to insert images into mysql database and how to retrieve and display the inserted images.
How to display the image that is converted into binary format?
How to set the password field in matlab?

I want optimize processing parameter of injection molding using genetic algorithm. but I don't how to use objective function from neural network in genetic algorithm to get optimize point. can someone help me.

if I have a function called "numbers.m":
function list = numbers (a, b)
How can I let MatLab give all numbers between a and b?
So when I type "list = numbers (2, 5)", I want MatLab to give:

I am trying to view my structure array but matlab just returns:
str =
1x9 struct array with fields:
   name

Hi people,
How can i reduce the number of  (frequency,attenuation) points in my dataset to 50 points?
The original dataset contains 150 points and I want to reduce its size to exactly 50 points
Original Dataset :

Hallo everyone,
i need an example for makefile that results after codegeneration from
a superblock for the scicoslab (for linux).
can any one help .

I wanted to try out the demo RLC_circuit in Scicos, which is using
Modelica. The compiler starts to work as expected, but then I get the
error that the "nmake" command is misspelled or not found.
I am using Scicoslab 4.3 on a Windows XP SP3 system. The compiler is

I'm looking for a Scilab method equivalent to VB IsMissing. Suppose
you have a function fun(a,b,c,d) with b,c optional parameters. Inside
the function, argn(2) do not distinguish between fun(val1, ,val2,val3)
and fun(val1,val2, ,val3) calls, and I don't want to provide lacking

I am still on my measurment data fit problem.
I got 10 different measurement series (Y(:,1:10)) with the same X
values and I want to
fit these seperately.

Can this be possible that we can call a Java or C++ function from a
Scilab command and run java or c++ gui and
then implement a interface program to communicate between Java/C++ gui
and scilab ?

I'm trying to format the numbers in a database i'm trying to export to
excel using DDE since I have to do it 7,000 times and I've been
successful in formating some numbers but not those that need an
"accounting' format.  Below is my successful code for the number

proc format;
value parm 74='var1'
           75='var2'
76='var3';

I have a repeated measures dataset sorted by ID.
I have age at baseline, visit zero, and would like to add +6 to each
visit after.
Here is my code:

I have two Datasets with a field containing a unique key in each. Sorted by the
key field. What would be the best method to find the records which are in one
and not in the other? Can I use MERGE or do I have to write my own process?
Using SAS 9.1.3 and datasets are small containing ...

I do have some trouble finding an error in my code.
I don't fully understand what SAS is trying to tell me.
Here is the code:
data saslog_ekstrakt_sekvensiell;

Hi! I have never used SPSS before because I didn´t have to make
statisics. Now thinks changed and I am fighting with a sample of data
and cannot find the solucio... Could somebody tell me how to perform
the  Kruskal–Wallis test with the following set of data. I even cannot

I have a question regarding which statistic I should use for my
design.  I have 2 groups (men and women) and am testing a single trial
of wrist circumference on their right arm and on their left arm.  So I
have two independent variables (GENDER and SIDE).  I believe I would

I have a SPSS file with over 90 million cases. When I open it in
Statistics 18 the data doens't appear. All commands works normally,
but I can't see the data (It only show the variables names in the
grid...). In other equally large files same thing happen.

I have a master file, filled with about 3500 variables.
It is a study that has about 200 variables for each subject for one
week of the study
the study is 10 weeks long, which is why there are so many variables

 I was wondering if anyone had syntax for scoring the SF-12.  We have
the official software from the survey administrators and plan to use
it, as directed for our publications.   But we have to present at a
conference fairly quickly and it would be nice to be able to score