Can anyone help me with the following two:
 

1) Can you write a procedure showCol which uses the for var in list do...od construction to print the elements of a list in a column.
         
     showCol([a,b,c]);
  
2) Write a procedure primeCol which print the primes between given integers m and n in a column.

Thanks.

 

When trying to compute the eigenvalues of a symbolic matrix whose elements have different dimensions (say some are of the form A/L others are of the form B/L, L being length) the computed eigenvalues are incorrect.  To get the correct values you need to normalize the matrix so that all elements have the same dimension. Or am I missing something?

thanks in advance

dimitrios karamanlidis

 

How do I plot a parabola using only co-ordinates points in a Cartesian plane?  Am I even asking it right? I have maths assignment and it requires me to draw a parabola from a practical exercise using wind-span vs. time. I have not really started that but I know it would give me the co-ordinates I think… well please help me. Oh and i have Maple 12.

Thank You,

DD

I cannot insert a code edit region in a new document in maple 12. When I clicked Insert-> code edit region, nothing happened. But if I open a example document shiped with maple 12, I can insert a code edit region. What's the problem?

P := Matrix(51, 3): > R := 0.6e-1*(arctan(10*s/1.3+(-10)*.3)/Pi+1/2) ; y := evalf((-1)*0.6e-1*(arctan(10*s/1.3+(-10)*.3)/Pi+1/2)*cos(6*Pi*s/1.3)); > z := evalf(0.6e-1*(arctan(10*s/1.3+(-10)*.3)/Pi+1/2)*sin(6*Pi*s/1.3)); > for i from 1 to 51 do P[i, 1]:= evalf(Int(sqrt(1-((6*Pi/(1.3)*0.6e-1)*R(s))^2-(D(R))(s)^2), s = 0 .. 0.26e-1*i, 5, _Dexp)); end do; >for i from 1 to 51 do P[i, 2]:= y(0.26e-1*i); end do; >for i from to 51 do p[i, 3]:= z(0.26e-1*i) end do; I want paint the 3D-line by these points . what can I do? use plot3d(?) ?? Need help! Thank you!

Hi!

I have a big prob:

I have to do a quite long calculation for a construction.

In order to be able to keep track I need to use variables with indices like x_Engine, x_Gearbox, ...

But when I for example define x:=5, and later I want to use v_x (describing velocity in x-direction) maple understands v₅.

If I define v_x as "atomic identifier" - what seemd to be the solution for my problem - I can not use the solve-function anymore. It just does not work anymore.

Hi,

 

I was wondering if anyone knows how to do a summation over all positive integers up to N (where N is a parameter) excluding a finite subset of values.

 

For instance, how would I sum from 1 to N excluding 2,4,5?

 

Regards,

 

Art

I am uploading three files. They all do the same thing with slightly different datasets. files 29 and 27 obtain rasonable solutions, but 24 does not.

Could you help me figure out what the problem is and how such problems can be identified -- so that I can make the necessary changes to them.

I have the same problem with other datasets.

Thanks.

Download 2031_29.mws
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Hello.

Does anybody know how precise the eigenvalues (or the eigenvectors) of some Matrix are (when I use Eigenvalues(Matrix))?

Let's assume Digits=15. Can I have any certainty that the computed eigenvalues are precise to some (15??) digits?

I don't know how Maple computes them but if I suppose several (many) arithmetic operations then the error can move "upward".

Am I wrong? Thank you for all your suggestions.

>P := array(1 .. 51, 1 .. 3); >y := (-1)*0.6e-1*(arctan(10*s/1.3+(-10)*.3)/Pi+1/2)*cos(6*Pi*s/1.3); >for i from 1 to 51 do p[i, 2] = y(0.26e-1*i; od; / 1.227772386 1\ p[1, 2] = -0.06 |- ----------- + -| cos(0.1200000000 Pi) \ Pi 2/ / 1.203622493 1\ p[2, 2] = -0.06 |- ----------- + -| cos(0.2400000000 Pi) \ Pi 2/

how do I solve

x/(x-3) = y/(y-5)

manually?

Here's another really basic question.  Its about using suboptions.  The MAPLE help file gives the following info:

legendstyle=s

 

 

 

 

 

 

Hi.

 

I am trying to evaluate:

sin(pi*n)/(pi*n) assuming n::integer

Maple returns 0.

It seems to me that it really should not evaluate since it does not know if n=0 (where the correct result is 1) or not.

If it does evaluate, it should evaluate to a dirac function at n=0.

 

Regards.

 

 

 

 

Greetings all I know I can get the odd numbers and even numbers using the following command

oddnum := seq(2*j+1, j = 0 .. 13);

1,3,5,7,9,.....

evennum := seq(2*j, j = 0 .. 13);

0,2,4,6,8,......