Hi everybody:

I have a couple questions regarding tables in Maple 15.

a) For the most part, when you want to resize a table you grab the rightmost boundary and slide the cursor to the left or to the right as you wish. I have come across many situations in which the movement to the left is resticted. In other words, you can not make the table smaller than a certain size. I wonder if anyone knows what controls the minimum size. I don't seem to recognize the cause and effect relationship.

When can we expect Maple 15.02 to appear, to correct that major error of matrix multiplication and the plotting problem with the classic interface in particular?

     Now a new set of fundamental physical constants has been released, as of 2011 June, making the values embedded in Maple's package Scientific Constants from the preceding millennium a further step obsolescent.  I understand, however, that the values of mathematical constants pi and exp(1) are still current.

for simple case 2*2,  A = matrix([[0,-1],[1,0]]);

using A, i understand f(x,y) = f(-y,x)

where do other case f(-x,-y) and f(y,-x) come from?

any command to list all cases with input a matrix A?

if A has more dimensions, what will the cases be ?

c := y^2+2*y*x+x^2-y^2*x-y*x^2

solve(c);

{x = -y, y = y}, {x = y/(-1+y), y = y}

above polynomial find roots using solve

if do reverse to find back its polynomial c from {x = -y, y = y}, {x = y/(-1+y), y = y}

any command to do this? is it possible to do this? which book teach this?

I'm running simulations in which I produce many plots at once, the purpose being to compare differences as parameters are changed. I'd also like to use some of these plots for publication. I've had problems getting good-looking 3d plots. Here's a strange thing I noticed.

Export the graph by mouse-clicking, export to bitmap:

EDIT : IMAGE POSTED IN MY COMMENT BELOW

Export the garph by executing a plotsetup('bmp') command.

1. How many and which file format can be used to save a list of formulas?

2. how to append to above file?

i would like to let c# program to read the formula in the saved file

Hello,

I am going to solve 2D Laplace equation for function Φ(x,y) in a rectangule which has a*b dimension, yet its boundary condition, at least for me, is rather complex. Here it is:

d/dx(Φ)=0  at  x=0 , x=a

Φ=1  at  0<x<a/2 , y=0   

d/dy(Φ)=0  at a/2<x<a , y=0

what is the command to computing syzygy ideal in maple?

HI,

I am trying to solve for fourier coefficients but can't figure out the error in the code. Need help to debug the code.

Also if possible how to find the harmonics in the curve defined in the code.

following is the website from where i got this code

http://www.mapleprimes.com/questions/121551-Fourier-Serie-And-Discrete-Fourier-Transform

fouriercoefficient_h.mw

HI,

I am struggling with simple multiplication shown in the attached file:

Is there any specific multiplication command I should use. 

Pls guide me in respect of how to make plot after multiplying A and B

Thanks in advance

Ali

question.mw

Good afternoon

i have problem when i am using components.

i want to solve a determinant equation and show in MathContainer4

thank you for your help

ejemplo_09-08-201.mw

Hi,

I am trying to solve a system of PDEs numerically and having following error

Error, (in pdsolve/numeric/plot3d) unable to compute solution for t>HFloat(0.0):
solution becomes undefined, problem may be ill posed or method may be ill suited to solution

Please have a look at attached worksheet and help me out.

Moreover, I want to include boundary conditions are not normal to the boundary. Anyone knows how to do so? Any help would be appreciated.

Is it possible in Maple to choose the dimensions for a plot? I mean to choose the height and the width of the plot?
For example, to enlarge the plot to the whole width of the maple page? Is it possible?
I need to do this because I have to plot together objects of different dimensions and so the smaller ones look too small, so I would like to enlarge the plot to solve the problem. 

Hi

I have an expression as the following:

exp1:=E(z)*(diff(t(r), r))/(1-nu(z)^2)+E(z)*nu(z)*t(r)/((1-nu(z)^2)*r)+(E(z)*z/(1-nu(z)^2)-(4/3)*E(z)*z^3/(h^2*(1-nu(z)^2)))*(diff(y(r), r))+(E(z)*nu(z)*z/(1-nu(z)^2)-(4/3)*E(z)*nu(z)*z^3/(h^2*(1-nu(z)^2)))*y(r)/r-(4/3)*E(z)*z^3*(diff(p(r), r, r))/(h^2*(1-nu(z)^2))-(4/3)*E(z)*nu(z)*z^3*(diff(p(r), r))/(h^2*(1-nu(z)^2)*r);

I want to replace the following parameter instead of coefficients of t(r), y(r), p(r) and their derivatives as the following:...

I'm trying to substitute a list of equations into an expression as so:

V:=ReSeq([seq(seq(u(t)^r*v(t)^s=y(r,s),r=0..w+e+1),s=0..w+e+1)]); # where ReSeq reverses the order of the sequence

for i from 1 to nops(V)-1 do
N[i]:=algsubs(V[i],N[i-1]);
end do;

where N[0] is a polynomial in u(t) and v(t). But it keeps giving y(1,0)*y(2,0) instead of y(3,0).