I would like to create a single animated plot with two components.

The first component being an animation of the graph of r = 2*sin(theta) as theta varies from 0 to 2*Pi in the r-theta plane.

The second component is another animation, simultaneously showing how the graph of r=2*sin(theta) is generated in the polar coordinate system.

I am able to produce each component separately rather easily using the plots:-animate( ) command. What I am looking for is somehow being able to use ...

Hey guys

I am currently working on my final project in high school. This project is about mathematical modelling within epidemology, and i am currently working on the mathematical models based on the SIR model.

The basis models for the SIR model were pretty easy, but i cant figure out how to fit data to my models. My first idea was to use the method of Leastsquare and/or Nonlinearfit, but i cant figure out how to do this in maple.

Hi im using maple 16 and defined a vector field that is lengthy below,

(and yes i defined with(VectorCalculus), and SetCoordinates(cartesian(x,y,z)) (x,y,z is subscripted)

And i am using a type of line integral for the work of a particle's path through a force field which i defined here as Z.

Hi, I've defined a function :

Hello,

I'm trying to fit some of my research data to a polynomial.   I can do this, but what I need to know is how Maple is calculating the standard errors.  In other words. I need to know the underlying forumla Maple is using for these standard errors.

Is there any documentation on this anywhere?  

For reference, the Maple command I am using is:
LinearFit([Z^(-2),Z^(-3),Z^(-4),Z^(-5),Z^(-6),Z^(-7),Z^(-8),Z^(-9)],X,P2,Z,output=standarderrors); 

I have a large symmetric square 15x15 matrix (say B). With all entries in the region 0.285746383 and I am trying to calculate the eigenvalues of them using

with(LinearAlgrebra);
Eigenvalues(B);

B was originally an array that I converted to a Matrix with convert(B,Matrix).
I have also used type(B,Matrix) which returns true.

Yet when I enter Eigenvalues(B); It returns "Error, invalid input: LinearAlgebra:-Eigenvalues uses a 1st argument, A, which is missing"

Hi!

Im having some weird results when using either subs or sum with a variable able to take on different values. I have been able to reduce the problem into the following:

>subs(x=0, 0^x )

 answer: 0

But when i simply type:

> 0^0 

the answer is the correct:  1

Why is this happening? (same thing often also occurs when i use sum, eg it says that sum(0^x * a , l=-3..3 ) =...

I have several functions that cannot be integrated analytically but are to be used (repeatedly!) in further integrations. I have created a table of values of these integrals for a mesh of parameter values.   If I then use the ArrayInterpolation function to compute just one value at one point - it's very inefficient - takes lot's of time...  

   What is the optimal way of defining "InterpolatingFunction"  (in the language of Mathematica)?  Are...

Which algorithm does the LinearAlgebra->MinimalPolynomial function use to compute the minimal polynomial of a matrix?

Thank you.

Hello,

I just lost the result of a 20h calculation due to the last-name evaluation using tables. Consider that

t := table([1=2]):

s := t:

save s, "table":

restart:

read "table":

s[1];

evaluates to t[1]. The save command only...

How can I expand (1+x)^n, where n is a posive integer number?

Hi,

I have this matrix with coefficients that I need to estimate;

I get there after some simple calculations and I know that my matrix it´s equal to the zero matrix; I have something like:

A:=Matrix(3, 3, [5*a-4,  5*sqrt(a) *sqrt(b)-5, 7*sqrt(a) *sqrt(c)-6,  

        8*sqrt(a) *sqrt(b)-5, 8*b-2,  8*sqrt(b) *sqrt(c)-9,   

        4*sqrt(a...

Hello, i'm having a problem whit my code for Finites Differences, but I don't really understand why. 

The principal error said this "

Error, (in fsolve) eq[2] is in the equation, and is not solved for"

The other errors come from this one, but the strange thing is my code work whit differents "h"

For example whit h=1 it works, but with h=2.5;0.5;0.1 It doesn't works.

Please help I'm kind of amateur whit Maple

To begin with, there may be some confusion about units, because in Maple units are an organizational tool and a dimension specifier.

I am trying to prepare a document using 2D. I am not experienced, but am using Help, Maple on the web, &c., extensively to come up to speed. I wanted to get rid of units expressed in [[]] because I am not used to seeing them.

I am

1. I'd like to subscript ESCS below, but cannot unless I use (z)
2. It would be nice to use "natural units" for ESCS(z)
3. It would be nice to remove nT outside the vector in BavgSCS
4. It would be nice to combine the units in EBPP
5. In B:=norm(), the |nT| causes future problems

For each result, I'd like to set the tolerance for zero to some value so that I don't get -0.0. For example, I might choose 10^-5 to be zero for one result and 10^-12 for another.

These notes are also in the attached file.Maple_primes_questio.mw