Hello, I want to create a list to store the points in C^n with norm 1. The motivation is to use this set of points as a domain to view the image of functions like <x, Ax> (so, x has norm 1).

If it's not possible to store an infinite list, is there anyway to store an albeit large finite list so as to have a good number points in C^n norm 1 spread about evenly?

 

Thanks

Hello :)

I'm trying to write an Ackermann function on Maple, here is the source:

> B := (n, a, x) -> if n=0 then a+x elif n=1 then a*x elif n=2 then a^x elif x=1 then a else B(n-1,a,B(n,a,x-1)) end if:
> A := (n, x) -> B(n,2,x):

With small cases it works perfectly, for example:
A(3,3);
    16
but... when i'm trying to calc A(5,5), i get an "Error, (in B) too many levels of recursion". Any ideas?

Hello,

I have this loop:

> for j from 1 to T do
if pointsd[2][j+1]<pointsd[2][j] then print(j-1) fi;od;
                                 

The print gives me (correctly) 2 numbers: 59 and 124

and i need to use these numbers further but i dont know how to call them..

It would be great if i could made an array with these two numbers,like

Hi! I have the following equation to solve: J1*K11-k*K1*J11=0 where: Jx=BesselJ(v,c*sqrt(a-x^2)) K11=BesselK(v+1,c*sqrt(x^2-b)) K1=BesselK(v,c*sqrt(x^2-b)) J11=BesselJ(v+1,c*sqrt(a-x^2)) k=sqrt(a-x^2)/sqrt(x^2-b) Any suggestion to find x???? I tried with "solve", but it says "Warning solutions may have been lost" Also tried with RootFinding --> Analytic, but after processing a while there is no output.. Any suggestion is very welcome!! thanks!

There is a set of non-linear equations solved at each time step for a differential equation..how to implement this in maple.

A typical scenario would be tyre models for vehicle dynamics applications.

help in this regard would be appreciated.

Raja Amer Azim

Hello,

I have what may or may not be a nasty equation for the structure constants of a particular algebra I would like to classify.  Said equation looks like:

 

f^{0ij}_{\rho}*f^{\sigma\alpha\rho}_{\beta}=f^{\sigma\alpha0}_{\rho}*f^{\rhoij}_{\beta}+f^{\sigma\alphai}_{\rho}*f^{0\rhok}_{\beta}+f^{\sigma\alphaj}_{\rho}*f^{0i\rho}_{\beta}

 

hi

I'm dealing with an expression involving terms like:

( a * x ^ l * y ^ m * z ^ n ) + ( b * x ^ p * y ^ q * z ^ r ) + more of the same. The powers can add up to order <=8 [ for example  l + m + n can add up to 8 or less ]

How do I "ignore" terms in my expression where the powers add up to more than 4 ?  [ I know that these orders of magnitude can be ignored ]

I'm trying to use "collect" but can't see how to do this yet.

many thanks

Peter

 

 

 

 

To anyone out there who may be able to help

I have been researching into closed-form solutions of the 2 x 2 case of the Matrix Differential Equations

dM(s)/ds = [ M(s) , D(s)/2 ]   ,    M(0) = Mo in sl(2,R)  ( 1 )

dD(s)/ds = [ M(s) , K(s) ]      ,     D(0) = Do in sl(2,R)  ( 2 )

dK(s)/ds = [ D(s)/2 , K(s) ]    ,    K(0) =  Ko in sl(2,R)  ( 3 )

hellow!

my maple 11 recently isn't working, i mean with double click not only is not working,

but also after i removed it, setup also is not working.

whats the problem? is it of virus?

 

diff(u(z),z,z)=g*S/Az        (Barotropic pressure gradient vs friction equation)      where S=Diff(eta(x)) or surface slope

bc=Az*D(u)(z)=0,Az*D(u)(-H)=tau/(Az*rho)=Cb*u^2(z)/Az

how can I solve and plot the for different depth z=-20 to 0

and Az=0.0010,Cb=0.0025,S=-0.000001

 

 So how can I find the u(z)

and plot the graph of u(z) (velocity) against z (depth)

 

 

 

 

 

 

Helo,

I woud like to read commands from a text file, that contains both expressions in Maple syntax  and  other  things too.
The following example is a simplified version of my problem.

The first example works as expected, it gives a vector of random data :

parse("Statistics:-Sample(Statistics:-RandomVariable(Normal(0, 1)),100)",statement) ;

The following line doesn't work for me (Maple 12), i. e Maple doesn't evaluate the Sample command.

I've just created a very long document.  Without having to scour the entire document to see what expression I've assigned to a certain variable how can I recall my original expression after I've assigned values to the variables in it?

It would like to decide the following integral, however with the function int I did not obtain. The integral is the following one

 

int((exp(1/sqrt(2/delta)^2)/((t+delta*mu/(delta+1))^2*(2*sqrt(2/delta)*sqrt(2*pi*delta*mu/(delta+1)))*t^(3/2))*(t+delta*mu/(delta+1)))*exp(-(t*(delta+1)/(delta*mu)+delta*mu/((delta+1)*t))/(2*sqrt(2/delta)^2)), t = 0 .. infinity)

 

with delta>0 , mu>0.

 

I am thankful anticipatedly

 

Manoel Neto

<p>I running Maple 12. I don't see what could be wrong with the specified initial values for this nonlinear fit problem. Note error when initial vlaues are specified, and no error without initial values.

Hi,
when Maplesim derives the equations from an electrical circuit,  it renames components in a way that makes the equations bloated/unreadable. Simple example: a resistor R1 becomes `R1.R`, which is awkward for further use. Is there a global switch to change this ?