My question concerns such situation:

 how to concatenate the following matrices:

and

????

Is there an easier or shorter way to do the following? Any handy package command?

Related question: Is that substitution mathematically correct or does the _a belong to the outermost RootOf?

Download parameters_in_nested_RootOf.mw

Dear Maple users

Is there a way in Maple to create a sphere with a texture similar to that of the Earth (UV mapping maybe?). I plan to later add mathematically defined spatial curves to the sphere to study differential geometry aspects.

Erik

most of time is give me true my substittuetion but  a lot time i saw it is not make my substittuetion true and this time i figure out which author did   and outcome is what i am looking but when i do that is so different where is problem 

f-m.mw

In here i did try my best and my equation outcome are ok but is not same as author did i dont know why, beside this he try to use two ode for constructing  a new ode which find of one solution of this can be the third solution of ode!
 i have to use eq(5) for my orginal ode  but eq(5) contain f(x) and g(x) which by some assumption  and taking two other ode eq(6) and eq(7)  they construct new one which is eq(14) and by f(xi) and g(xi) have corelation with W(xi) which is third ode  as in eq(9) and eq(11) mentioned, i try to use the solution which author mentioned but is not give me solution of third ode by using corelation what is problem here? also in eq(21)  and eq(25) when thus parameter are satisfy must our odetest be zero

i will update two maple file which realted separatly for constructing  equations and other is for apply and satisfy the solution for ode!

F-p.mw

ode-17.mw

To find the recently introduced new command that compares two expressions, I prompted the large model: 

Answer:

A useful Maple command specifically for comparing two expressions is verify.
Use it like this:
verify(expr1, expr2, equal);
This asks Maple whether the two expressions are mathematically equal.
If you want a more robust algebraic check, a very common alternative is:
is(simplify(expr1 - expr2) = 0);
For polynomial expressions, this is also common:
evalb(expand(expr1 - expr2) = 0);

This is not what I was looking for. I was looking for the command that visually highlights differences.
Can the prompt be improved?

Greetings, Friends.

I have a function f(t) which is a density function. It has a [0,2] interval and integrates to unity. I convolve f(t) with itself to get g(t). It has a [0,4] interval and integrates to unity. All is well with that and I understand.

BUT, the boundary of g(t) shouild be on the interval [0,4/sqrt(3)]. This is based upon both my simulation and other analyses.

At present, the area of the g(t) function on the [4/sqrt(3), 4] interval accounts for 1.408701% of the area under the curve. Not a "trivial" nor "throwaway" amount.

Does anyone know of a way to "re-scale" or modify my convolved result g(t) so that all of the resultant area under the curve is on the [0,4/sqrt(3)] interval?

My work is attached.

Download SphereConvolution.mw

Note that Maple 2026 is not an available option on the product list above. This operation was used in Maple 2026.

I obtained code for the shuffle product of two lists from the AI Assistant. Included in the code was the following list operation to extract a sublist.:

 defined list  u:=[a,b,c]:  extract the sublist using the operation u[2..-1] which gives correct result [b.c]

Normally, I would have expected this operation would be encoded as [op(2..-1),u] . 

Is the shortcut notion reliable or should the operation have been encoded using op() to be safe.

Dear Ladies and Gents ,

I am sorry to ask such a supposedly trivial thing :

what is the differences in the 2 A defined in the attached "worksheet" ?

Thank you.

I am tired and my brain is bugged tonite.

Have a great evening.

Jean-Michel

When trying to open two files I got this message. The files were completely empty. Hours of work lost.

Also further trouble with the interface: copy and paste, modifying text, etc. do not work as they should. Could resolve some problems, but I am losing time and I doubt about the reliability of the software.

Any suggestion?

Hi MaplePrimes, and all,

got stuck

want output of all numbers less than 234 that are divisible by eleven
see attached
if_question.mw

if_question.pdf

Thanks in advance

Matt

 a while ago there is a code for changing function from trig to hyperbolic and viceversa  but i can't find that code except changind xi=I*xi there is another one?

Download convert.mw

Hi,

Is there a way to get a date from a Julian Day Number in Maple? I can easily calculate a Julian Day Number in Maple, but sometimes I need to go in the other direction. I have searched for a solution. Google AI has suggested a couple solutions, but the Maple commands it gives don't seem to exist (certainly not in Maple 2022.2).

Thanks,

John

Sirs,

Today I encountered the following issue. I am working in a Maple worksheet with the variable "xi", which looks as ξ on the Maple output screen.

I am also working in LaTeX with the aid of Scientific Word, a LaTeX-interpretator.

I copied an expression from the screen (Scientific Word) containing the letter ξ (in LaTeX \xi, on the screen as the letter ξ) and put that expression in my Maple worksheet. In the output screen of Maple my variable "xi" and the copied expression from LaTeX (ξ) looked exactly the same. However, for Maple those variables were different, respectively "xi" and "\316" as I noticed in my *. mw file.

My calculations caused my a problem, I did not get what I expected. Firstly, I thought I made somewhere a mistake but after all the copy from the screen in Scientific Word turned out to be the culprit. So, it is not wise to make a screen copy. 

But, why are the two variables looking the same in Maple while they are not for the calculations? 

Ed Veling, The Netherlands

Dear Power users, I probably have a stupid question. Till now I converted my data txt files first to excel to import them in maple 2026. I imagine there must be a better method. I have attached a sample file. As a side question is it possible to import several files at once? Thank you for your support

F12_1.txt