Dear Users,

Maple is giving the result for the following integration as

int( x/(a^2-x^2), x)  = -ln(-a^2 + r^2)/2  

However, I presume the integral output should be -ln(a^2 -  r^2) /2 

Could any one comment on this issue.

Thanks for your attention.

as i do not know what is nu and omega in beta distribution, can i solve it by equating with mean of real data's mean and stardard derivation, to find nu and omega, but solution of nu is negative, 

i guess this method may be wrong, as result diagram is not fitted with real data

and weibull using this method, can not be solved and said solution lost

what is the correct way to draw it?

Hi,

    This is a silly quesiton, but I'm stuck on it. I have 4 vectors of length 16. I want to plot the 16 elements in different colours against the vector number (n=1..4). And assign the same colour each time to each element, i.e color( V[7, n=1] ) = colour( V[7, n=3]  ). How do I do this? 

Thanks!

I got this error message while attempting to compute Inverse matrix of symbolic function. 

Error, (in Normalizer) unable to allocate enough memory, computation aborted

I have managed to download data for Nasdaq, NYSE and Amex in Maple. However,
my problem is how do I store the data in a txt file on my desktop in the most optimal way.
I want an mpl file so I can schedul the task manager to run the file each day in the background.
This is as far as I have come:

restart:
with(StringTools):
with(LinearAlgebra):

CSV := proc (Url) local theDLL, URLDownloadToFile, myDirectory, myFile, Destination, DL;

theDLL...

how can i plot the graph of this equation.

V[q](r,θ) = 1/r - 1/(r^2*sin(θ)^2)

considering 0‹θ‹pi and q=1.

Hello

    IS THERE ANY MAPLE CODE FOR SOLVING SYSTEMS OF ODEs using IMPLICIT RUNGE KUTTA SUCH AS LOBATTOIIIA,LOBATTOIIIB and LOBATTOIIIC.THANKS

I have a polynomial system that I'd like to find ONE solution of (there may be many, so I want the program to terminate after 1 is found, since I only need to know that there IS a solution). In this system, the unknown variables are a_i, b_i, c_i, d_i, s_i, t_i, r_i, l_i, for i = 1, 2, 3, 4. Thus I want the solution in terms of these variables. The system is given below.

\begin{align*}
q & = \sum_{i = 1}^4 a_i s_i, \\
w & = \sum_{i = 1}^4 a_i t_i, \\

Hey,

I'm on Maple 16 and looking for some help.

Basically I have a function Psi(x) and I want the function x(Psi).

Here how i define Psi(x) :

psi:=x->(ln(x)-x+k*(1-x)^2+(V*G)/(R*T)*((1-x)^(1/3)-(1-x)/2))*(R*T/V);

The constants R,V,G,T,k are well defined (physicist here).

And then if I try

solve(psi(x)=y,x);

It gives me no solutions with the warning "Warning, solutions may have been lost".

Whereas if I fsolve it for a certain y :

ROOT1.mw

Hallo Guys,

This questions was asked 7 years ago and I hope now there is some knowldege how to do it ( else Maple sucks that in 7 years they havent figured out it yet ) ...

So basically How do you change the inline plot size window in the worksheet itself by command line ( For Noobs please do not show off your "Skills" by saying that you can do it b Mouse : I know that much else wont be here :P  and those who want to tell me how to do it in a jpeg/etc also Shut up ! ...

Before I brought up my question here, I had asked it [here](http://stackoverflow.com/q/16852062/1842737). Thanks for your hint and the time.

Hello,

I am trying to obtain an inverse of a symbolical 4 by 4 matrix in order to diagonalize it. I have noticed that the command 'Inverse' seems to find a matrix inverse almost instantaneously, whereas the Matrix Inverse command from the Linear Algebra package takes far longer - on the order of hours. Can anyone explain the difference between them? It seems like 'Inverse' is roughly speaking, an approximation to 'Matrix Inverse', however I have not been able to find...