I more than 20000 data points on a an excel file and i want to plot one column against the other. So I imported 10 data points from each column seperately and tried ploting it as a normal plot but it would not work. I kept on getting error messages like 

plot([CosAa,CosBb]);

Error, (in plot) incorrect first argument [Array(1..10, 1..1, {(1, 1) = 0.83333e-2,
 (2, 1) = 0.166666e-1, (3, 1) = 0.249999e-1, (4, 1) = 0.333332e-1,
 (5, 1) = 0.416665e-1, (6, 1...

Dear All,

I have an equation to solve. 

1= sum_{i=1}^n 1/(x+a_i) where a_i is given. I want to solve this equation for unknown x. I know there is a value between 0 and 1. Although I can find the solution by numerical method, I am interested in close form to solve this equation.

Help please.

Best Regards,

Saeid

I have these as outputs from comparing the coefficients. How do i assign the g_2xyz totheir associated numbers.

eg at present g₂₀₀₀ is g_{2000. I need it to be 1.2e7. And so on down the list.}

But what can we say about

Maple does not evaluate it:

And perhaps it should not because of the alternating sign;

Download 3232012.mw

I got an MS Excel file where the matrix (7054x60) is created and the last row of the matrix is used for optimization of its (the matrix) values. In Maple you can create the matrix as follows:

M := Matrix(7054, 60):
for i to 10 do M[1, i] := 1 end do:

Mat_proc := proc(x)
  local i, j;
  global M;
  for i from 2 to 7054 do

How does this  function  work:

rtable_scanblock( M, [rtable_dims(M)],

    (val,ind,res) -> `if`(val > res[2],[ind,val],res),

    [[1,1],-infinity]);

Please could comment on each statement.

Taken from  http://www.mapleprimes.com/questions/131889-Finding-A-Max-In-A-3d-Plot#comment131997

Gracias

xsys11demo.mw

The attached worksheet (xsys11demo.mw, first-order non-linear ODE system) is ~x100 (one hundred) times slower that the "same" program in Mathematica 8. Both give the same/satisfactory numerical results and have similar/identical structure (I can supply the Mathematica 8 notebook, if requested).

I assume that my attached worksheet must be sub-optimally programmed and would be grateful...

Like this! Some error. How to do it

[IMG]http://i730.photobucket.com/albums/ww309/ytyyutianyun/Capture-6.png[/IMG]

I have the function which I run well in Maple V
but in maple 15 .It's wrong. How can it be? and please help me to edit it.

for i from 0 to 15 do
t:=1+i/16;
p.i:=plot(sin(x*t),x=-10..10,axes=none):
od:
display(array(1..4,1..4,[[p0,p1,p2,p3],[p4,p5,p6,p7],
[p8,p9,p10,p11],[p12,p13,p14,p15]]));

Hi everyone,

I guess the question I am asking is quite common, however I am still not able to figure it out. I have several (right now three) non-linear inequalities. Given these inequalities, I try to plot them in one graph and then color the different areas with different colors. It would be also ok, if just the area where all inequalities hold is plotted. To do this I have already tried several things. With implicitplot and transparency it is generally working, but...

I have a 6 x 6 matrix. I want to employ Cramer's rule to solve Gx=Θ. I need to sequently substitute column Vector Θ into the matrix columns. I can't get this to work. I have only being using Maple for a couple of weeks so still finding my way.

myf:=(mu,sigma)->int(exp(-(x-mu)^2/2/sigma^2)/sigma/sqrt(2*Pi)/(1+exp(-x)),x=-infinity..infinity);

plot3d('myf(mu,sigma)',mu=-5..5,sigma=0.5..10);

This plot was never created. I think it's taking too long to evaluate it when it's divegent.

Hi all,

For my research purpose, I need to integrate this function. I understand that there maybe values for which this integration is divegent. But is there a way to look into it? Say creat...

how to write a procedure to ceiling a number such as 3.5 to 4

I have a set of multi variate polynomial  equations. I need to setup a matrix [G][x]=[Θ]  Θ is a function of c₁ and c₂ up to 4th order terms

 My problem x=[c₁⁵, c₁⁴c_{2 ,} c₁³c₂² , c₁²c₂³ , c₁c₂⁴ , c₂⁵ ] these 6 5th order terms...

Hi,

I'm trying to plot a few phase portraits for this four equation system but maple wont let me...

> restart;

> s := 10; d[T] := 0.2e-1; k1 := 2.4*10^(-5); k2 := 3*10^(-3);
> N := 5; delt := .24; c := 2.4; T0 := 1; 

with(DEtools); 

with(plots);

[INSERT YOUR CODE HERE BY COPY-PASTING IN 1-D FORMAT]

Can someone please help me? Thanks