I like to use Maple as an informal  text editor for math correspondence. (I do not use Tex and am firmly committed to not learning Tex. Principled laziness.) I usually insert a Document block in a new worksheet, type my letter utilizing all the wonderful automatic formatting-powers, symbols, integrals, etc. easily available in Maple and then print the resulting document as a pdf and email it. It is much more readable for me and for the person receiving the document.

In a worksheet how can one see all of the page breaks.  I want to be able to size plots to minimize white space.

Is Maple able to get the lightning data from here www.lightningfinder.com

The map is refreshed every 30 seconds and displays where the lightning strikes are occuring.  I can't determine where the page is getting the data from.  Where is the page getting the data and how can we use Maple to pull the data? 

I understand completely how the Playfair cipher works but I'm not sure how to begin to implement it into Maple. Does anyone know how to begin encrypting and decryptin a code using this cipher?

Hi, I'm starting my program using Maple, then will bring some data to calculate in matlab, later on bring the data back to be calculated in Maple.

My equations have lots of trigonometry multiplication of matrix. When I run it in matlab, it runs fine. But when I try to use Matlab[FromMFile]("test.m",'evaluate') it gives me this statement:

"Error, (in Matlab:-FromMFile) unable to strore '(3.500000000*I)*2^(1/2)' when datatype=float(8)"

Could someone please...

Hello.

I took the battery out of my laptop by a mistake while it was in sleep mode. Now maple can't open the document even though i did save it before. It opens a file where 80% of my work is gone.

Download BET.mw

Maple says Incomplete worksheet when I open the file.  

Can someone please help me?

Hi all,

I am trying to get the following matrix:

restart:
int00:=Matrix(3,3);
int00[2,2]:=a;
int00[2,3]:=b;
int00[3,2]:=c;
int00[3,3]:=d;
int00;
cols:=MTM:-sum(int00,1);
rows:=MTM:-sum(int00,2);
int00[1,1..3]:=-cols:
int00[1..3,1]:=-rows:
int00;

int00[1,1]:=a+b+c+d:
int00;
MTM:-sum(int00,1);
MTM:-sum(int00,2);

How do I get the sum of all elemnets in the 'original' matrix? Bascially, the int00[1,1] term in the toy example.

Z := proc (theta) options operator, arrow; sin(theta+2.3)+sin(2*theta+2*(-1.5))+sin(3*theta+3*(-0.94e-1)) end proc

Zbar := proc (theta, phi) options operator, arrow; Z(theta+phi)-Z(theta)end proc

plot3d(int(signum(Zbar(theta, phi)+l)*abs(Zbar(theta, phi)+l)^(1/4), theta = 0 .. 2*Pi, phi = 0 .. 1, l = 0 .. 1)

Hello, I am having some trouble plotting 3D of these function. There is no error message or anything, but when I enter plot3d command it takes too...

I want to find all the max or min values in a range, from a numerical function [t,x(t)], numerical solution of a differential equation.

For example if the solution was periodic in time, I want to find the max values of x in a certain intervalot t

Hi Guys. I´ve got a problem with the mod (mods,modp) function of maple.

I want to calculate the following congruences:

mod(4,-5) = -1 BUT maple returns 4

mod(-3,-4)=-3 but maple returns 1

and so on....

Does anybody of you know how to fix this? thanks!

Hello,

I have a problem. I want to make plot 3d for pressure drop in diffuser by posuille formula,

but with increasing of "l"(length of channel) graph shows wrong pressure drop. Normally with i increasing of "L" we should have...

> restart; R := 8.314;print(??); # input placeholder> G1[1] := piecewise(`and`(T > 298, T < 700), -7976.15+137.093038*T-24.3671976*T*log(T)-0.1884662e-2*T^2-0.877664e-6*T^3+74092/T, `and`(T >= 700, T < 933), -11276.24+223.048446*T-38.5844296*T*log(T)+0.18531982e-1*T^2-0.5764227e-5*T^3+74092/T, `and`(T >= 933, T < 2900), -11278.361+188.684136*T-31.748192*T*log(T)-0.1230622e29/T^9, 0);print(??); # input placeholder

> G1[2] := piecewise(`and`(T > 298, T < 700...

The system consists of 3 equationsHow can you single out one of the solutions in obtaining module and plot for it?
a := 1; m := 1/64 
l1 := 2*(diff(ur(e, t), t))+(1+tanh((1/20)*e))*(diff(ui(e, t), `$`(e, 2)))+2*a*(ui(e, t)*ur(e, t)*ur(e, t)+(ui(e, t)*ui(e, t))*ui(e, t))+m*ui(e, t)*(diff(ur(e, t)^2, e))+m*ui(e, t)*(diff(ui(e, t)*ui(e, t), e)) = 0 
l2 := -2*(diff(ui(e, t), t))+(1+tanh((1/20)*e))*(diff(ur(e, t), `$`(e, 2)))+2*a*(ur(e, t...

Let say that you have two datasets:

restart:
with(MyFinance):
z1 := GetCSV("http://www.quandl.com/api/v1/datasets/USER_18Q/18R.csv?&auth_token=BXckVSG3twWkV272c9Q4&trim_start=1968-04-01&trim_end=2013-04-12&collapse=daily&transformation=rdiff&sort_order=desc");
z2 := GetCSV("http://www.quandl.com/api/v1/datasets/USER_18Q/1EV.csv?&auth_token=BXckVSG3twWkV272c9Q4&trim_start=1994-01-03&trim_end=2013-04-12&collapse=daily&...

** comparison link has been updated for Maple 2015 **  All three M's have identical speed performances

Someone has created a comparison of Mathermatica 9, Maple 17 and Matlab 2013a here http://12000.org/my_notes/rankTest/test.htm

The timings and codes used were as follows:

2.2.1 Mathematica

Remove["Global‘*"];  
Share[];  
n = 7000;  
m = Table[Random[], {i, 1, n}, {j, 1, n}];  
AbsoluteTiming[MatrixRank[m];]


2.2.2 Maple

restart;  
kernelopts(gcfreq= 2^22):  
UseHardwareFloats:= true:  
gc():  
 
n:=7000:  
 
M:= LinearAlgebra:-RandomMatrix(  
     n  
    ,n  
    ,generator=0.0 .. 1  
    ,outputoptions=[datatype=float[8]]  
):  
 
time[real](LinearAlgebra:-LA_Main:-Rank(M));



2.2.3 Matlab

clear all;  
n=2500;  
A=rand(n,n);  
tic();  
rank(A);  
toc()

Certainly that must be the slowest possible route for Maple ever.  Anyone care to post their code and timings?