how to create  a pragram to draw the rays reflected by a concave spherical mirror in maple

I have an equation of the plane Q: x + y + z - 1 = 0. Now i want to define a function 

f:=(x,y,z)->lhs(Equation(Q)): 

and i calculate the value f(1, 2, 3), but Maple understand. Plese help me.

If i want to substitute the coordinates N(a + 1, b + 2, c + 3) into the equation of the plane Q. What must i do?

I have recently discovered that some objects in maple are (unexpectadly, and perhaps undeservedly) considered type:-polynom.

> T := table():
> type( T, polynom );
                                                true

> R := proc() end proc:
> type( R, polynom );
                                                true

My attempts to circumvent this by using a shaper polynom type were in vain (R can be subsituted with T without affecting output):

Hi, I have a 18x1 matrix. I am trying to sort it from smallest value to the largest value. But how to I as it to show which was the original position?

For example, M is my 18x1 matrix, i wrote "sort(M)".

In matlab I would write [Q,F]=sort(M);

Q will rearrange it for me and F will tell me the original position where it is from.

Please advice. Thank you very much.

Please name the post, which had the most visitors.
Quantity must be more than 24,000.

Many Thanks!

Hi! I have 4 function. I wanna plot two of them in x=-0.5..0 range; the other two in x=0..0.5 range. How can I display that four function in one plot? Thanks!

How to perform the following plot in Maple?

Hello, I cannot import a 4 Mb file   (https://skydrive.live.com/redir.aspx?cid=8fc13b21d305c1b2&resid=8FC13B21D305C1B2!112&parid=8FC13B21D305C1B2!107&authkey=!AMlLjsY6PHKn5AQ)

(that is a symbolic expression I'd wish to manipulate) taken as a single element of a list  by  a:=ImportVector("dinner.txt", datatype = anything);

kernel says it cannot interpret file.

Is there a limit in the input file dimension ?
 It's...

I have a 6x6 matrix that depends on 8 parameters, M(F) (F is an 8-dim array, say...), and I want to compute the eigenvalues of this matrix both at a fixed point F_0 and at some other arbitrary point F'. The problem is that I need to make sure the ordering of the Eigenvalues remains the same at these two points, so that if I'd go continuously from F_0 to F' the eigenvalues would go continuously from Eigenvalues(M(F_0)) to Eigenvalues(M(F')), without any flip in the order of the entries.

Dear All,

I would like to know the easiest way to write data, that are stored in a matrix after a computation, to a file with a specific format. To be more precise, I wish to have the possibility to change the format for a given column.

Here is a trial (output is wrote to the terminal for simplification) based on some examples I found, but without success.

WritedataMatrix.mw

Hello,

I want to calculate the IDs product :

How can a vector A=<2,3> be summed to 5.

hi

so ill preface this by saying my knowledge of DE equations is rusty at best and my knowledge of maple even worse so this may be a stupid question. im trying to model the dynamics of a system and when i solve for the DE equation it's giving me an accleration of zero (plotting a blank graph) when it definitely shouldnt be. ive attached the worksheet. DBM-variablemass_pro.mw

For L a given L-function (such as the Ramanujan-tau Dirichlet series) I would like to compute L(s) at 2.5*10^5 values of s equidistributed in a square region of the complex plane in a reasonably short time (meaning, say, less than an hour.) Is there a Maple function that will do this, either in the original software or available on the web?