I want to compute Hankel transforms with Maple.

I have noticed that Maple uses a different Hankel transform than the one in e.g. Bracewell (p335).

Maple computes

Integral{f(t)*Jn(s*t)*sqrt(s*t)dt, t:0->inf},

while I want to compute

Integral{f(t)*Jn(s*t)*t dt, t:0->inf}.

How can I compute the Hankel transform below with Maple?

 

Anyone know how to install Atlas (differential geometry package)? The terse instructions included apply to Windows only. e.g., it says put some files in the 'lib' directory. There is no lib directory. Feeling cheated...

I start by running microsofts free SQL Server Express 2005 (Microsoft SQL Server Management Studio Express) where my

data base UK-100-1SQL is located.

 

I run the following code in Maple :

 

Please help me how can i find nth derivative of

1/(1+x^2)

when i do

diff(1/(1+x*x), `$`(x, n))

maple gives

diff(1/(1+x^2), `$`(x, n))

even if i do

value(%)

maple still gives the same answer.

thanks

I am creating 2-d plots and exporting them in .eps format using Maple 10.  I've figure out how to change the thickness of the lines in the plot, but the the axes and tickmarks are still too thin.  I tried

plot(x^2, x=-1..1, axis=[thickness=2]);

however this does not seem to work, although a similar expression does change the thickness of the grid lines:

plot(x^2, x=-1..1, axis=[gridlines=[thickness=2]]);

 

There has to be a simple solution to this, and any suggestions are appreciated, Thanks in advance

I am having a problem with my loop. It only gives me one result.

In this program when i enter the initial values [B,C] it works and gives me an approximation. It then askes me if i want to find another root when i press "Y", it asks for the new values but when i insert the new values it does not evaluate them. It returns the previous result.

Is it possible to display the value of each contour line when using contourplot to plot contour lines? And how? Thanks.  

Something like this: 

 

 

The time derivative problem I had earlier is solved, thanks very much, except for the equation below:

diff(x3, t) = 2*lambda*a(1-p)*[x1*(x1-1)+x2*(x2-1)]-2*a*p*x3*[x2+2*(x3-1)]-2*delta*x3

which I seek to solve using:

dsolve(diff(x3(t), t) = 2*lambda*a(1-p)*[x1*(x1-1)+x2*(x2-1)]-2*a*x3(t)*p*[x2+2*(x3(t)-1)]-2*delta*x3(t));

Somehow the following error keeps coming back:

<p>Hello,<br />
<br />
I cannot figure out how to solve the following time derivative (I use the dot notation for x1 but don't think thats relevant):<br />
<br />
diff(x1, t) = -2*a*x1*(x1-1)+(1-b)*x0<br />
<br />
because when I use dsolve for this equation:<br />
<br />
dsolve(diff(x1, t) = -2*a*x1*(x1-1)+(1-b)*x0)<br />
<br />
there comes a error, stating 'Error, (in dsolve) expecting an ODE or a set or list of ODEs. Received 0 = -0.4e-2*x1*(x1-1)+.10*x3+.10*x5'<br />

I wonder what virtue there would be in an "assistant" in the Standard GUI to show and allow control of the interface settings.

In the absence of a built-in assistant (or tab in the Tools->Options panels) I wonder whether a simple Maplet would serve.

acer

How to achieve an operator to obtain the inverse of a function?

f:=x->2/(x^3+1);

Hi! Does anybody know which algorithm is used when the command "InterReduce" is envoked? I'm using Maple 12 and I want to interreduce a list of four homogeneous polynomials in 9 unknowns. I thought that "InterReduce" would use the F4 algorithm to reduce the polynomials, but the process does not finish, even after six hours. When I interreduce the polynomials "by hand" using the command "Reduce" everything is finished after 10 minutes. So, the question is, what does "InterReduce"? Which algorithm is used? Thanks a lot!! domo

Hi,

I'm using Maple 11 and trying to export Maple plots to Word 2007. However, no matter what I do, the quality is always quite poor. In detail the plots look like in a low resolution, i.e. lines are not smooth, although I have already set the resolution to a higher value. What would be the best way to do this? Any tips?

Thanks in advance,

Ciccarese

I got an expression: R:=(2*E-2*sqrt(E)*sqrt(E-V0)-V0)/(sqrt(E)+sqrt(E-V0))^2; I would like to plot R as a function of E/V0. I tried to substitute E=mu*V0 to R, then plot(R,mu=0.1..1),but failed to get the plot. How can I get the right figure? thanks.