Hi everyone!

Based on a recent post ( www.mapleprimes.com/forum/partialsubstitutionfrontendfreeze ) I have the following piece from a Maple worksheet, which I do not understand. First, I define A and B, where A is supposed to be substituted into B. If I have a "p" in A, then I get a "subs" as variable in B after frontend/curry with subs:

I am trying to set a timelimit for each loop, i.e.

for i from 1 to 10 do
    try
        timelimit(10,print(someproc())); #print result from the procedure being called
    catch "time expired":
        print(i, "time expire");
    end try;
end do;

However, it doesn't move to the next loop. It just terminates after completely the first loop (i.e. i=1).

If I am correct is the gradient of a the 3X3 tensor each element on the same row differentiated with each coordinate variable x, y ,z or is that a different operation?  I am unable to find the correct operation or I am not using the MAPLE command correctly to get an output.  I did load the Vector Calculus package.

What is my problem??

Dear Community

I have a problem with units definition,I'm working with maple with kgf and tonf,

I read in help page this "A tonforce is defined  as the force of gravity on a short ton.......", so when I convert 1 tonf to kgf I get 907.18kgf,

I know this is OK, but since I don't use short ton in my country I would like to define in METRIC 1tonf = 1000kgf.

How can I do this? Here is a conversion table where it says 1tonf = 1000kgf (metric), not (short)

Hello,

I  would like to perform inverse Fourier transformation, but I get an error message::

restart;Fs:=75e6;Ts:=1/Fs;:g:=add(Dirac(t-k*Ts-6*Ts),k=1..4);G:=inttrans[fourier](g,t,w);
 

Error, (in gcd/gcdchrem1) input polynomials have too large a degree
 

I have Maple 13.

Thanks four your help in advance.

 

Hi, To see the body of a procedure in Optimization[Interactive] module, i use this method: interface(verboseproc = 2); kernelopts(opaquemodules = false); print(Optimization[Interactive][BC]); but "too many levels of recursion" Error occurs! Note that this method works for other procedures in this module, for example test it for Optimization[Interactive][InittoText]. What is problem for "BC"? and what is the solution? thanks.

Hello, I have an equation with 200 variables and I want to assign them to a 1 column by 200 rows matrix. My variables are named ΔX_i where i goes from 0 to 100. My Matrix is named Matrix.

I have tried something like that:

ΔX_i := Matrix(i) but I get "Error, unsupported type of index, i"

Any ideas?

Thank you
 

please help me here

we want a "remember table assignment for the first derivative evaluated at a point a1" for example

D(f)(a1):=0

but using this command maple creates a proc

for example using the command

f(a1):=0:

maple asks : 1. function def. 2. remember table assignment

but using D(f)(a1) :=0 just creates a function def.

Very likely there is a very simple solution to this question, but I searched Maple's help pages and this forum and didn't find a solution.  Probably because I don't use the correct English terms.

given two functions

(1) X := x->f1(t);

(2) Y := y->f2((t);

witth t = -infinity...infinity; f1 and f2 arbitrary functions of a parameter t

How I can get the function

Y := x->f3(x);

Situation:  I have multiple lists of the form [i$i=1..n,0$k] , where n is a positive integer and k is a nonegative integer.

 

Desired result:  For each list, produce a list of permutations of the list (as you would receive from combinat[permute]) such that in each permutation, the nonnegative integers in the list appear in ascending order from left to right and no two nonnegative integers are adjacent to one another. 

 

How can i ignore the singularity and gain values past this point? i get:

cannot evaluate the solution further right of 2.6991460, probably a singularity.

the program decsribes the motion of a double pendulum, so that the equations used show their angles relative to a normal...i want to gain information about these angles from a static point as time procedes. therefore the points will go back on themselves.

thanks

alex

I have a question concerning list.

I want to calculate value of X which is sum of x[i]

And there is a list L of length n whose i th element is x[i].

How can I do it in maple using procedure? Hence, use this procedure to calculate L:=[1,4,5,6,8]

Thanks~

 

please help me here

suppose we know the following for a function which we donot know

x0 and f(x0)

x0 and f ' (x0) (first derivative at x0)

x1 and f(x1)

x2 and f(x2)

how can we approximate second, third and fourth derivatives of f(x)  for example say at  a point x3

I'm using maple 13 in document mode. When I want to designate a variable as the time derivative, I use the over dot symbol. The problem is that the output is displayed with the full derivative symbols in leibnitz notation. It's really hard to read when the my outputted equations are very long with higher order time derivative terms. Is there a way to get the output to be just displayed with the over dot symbol.?

 

Thankss

 

hi

how can we compare the malpe calculation and manual calculation.

I mean if we use maple to have a solution (different form) and then try to get the same solution manually (compressed form compare to maple), now i want to compare both the solutions using maple, whether the two solutions are same or not.