MaplePrimes - Maple 2024 Posts and Questions

How apply special transformation ?

salim-barzani — Mon, 11 May 2026 08:09:36 Z

How i can apply this transfromation which is special and i can't undrestand how from that solution he did thus changes and get the solution of ode , i reached untill eq(3.5) but after that i can't figure out what he did and how we get eq(3.7)-(3.9) (3.12),(3.13) and how we can tranform solution for the eq(3.5)

fp.mw

animating right triangles spiraling from the origin

jalal — Fri, 01 May 2026 17:45:36 Z

Hi,

I am working on an exercise involving sequences of complex numbers, with the goal of animating the resulting spiral and possibly displaying the right triangles originating from the origin. I am looking to improve my animation to make it clearer, more visually appealing, and easier to interpret.

Thanks for your help !

Spirale_Suites_complexe.mw

Determinant of a Kronecker product

Harry Garst — Mon, 20 Apr 2026 18:35:21 Z

It can take a lot of time to verify the equality of the determinant of a Kronecker Product and the Zehfuss determinant. See attached worksheet)

As Acer has pointed out Abstract Linear Algebra is not implemented in Maple.
https://mapleprimes.com/questions/239405-How-To-Force-Maple-To-Use-Basic-Math-Results

Today I have been trying to replace the determinant of a Kronecker product by an unevaluated Zehfuss determinant. The first problem is how to detect whether there is a determinant of a Kronecker product present in an expression. Neither I nor Copilot, ChatGPT, Gemini and Claude were able to take this first step (although all the AI programs were very optimistically continuously presenting new code with the same disappointing results).

Maple_vraag.mw

How to add exponent patterns for inverse Laplace transform

Honigmelone — Wed, 15 Apr 2026 12:38:39 Z

I want to add this rule to maple invlaplace:

invlaplace(Divide[exp(-s*a),b*Power[s,2] +c)]) - Wolfram|Alpha

It works on expressions that use "exp(-s*a)" but not on expressions with "e^(-s*a)". I do not know how to force maple to substitute the expressions and I do not know how to formulate this rule to make it stable. I need this functionality since maple returns results with e^(...) instead of exp(...). Can you please help me? I have attached a workbook example.

>	restart;with(inttrans)

(1)

>	addtable(invlaplace,exp(-sa)/(bs^2+c),Heaviside(t - a)sin(sqrt(c)(t-a)/sqrt(b))1/(sqrt(b)sqrt(c)),s,t,a,a::positive)

>	addtable(invlaplace,e^(-sa)/(bs^2+c),Heaviside(t - a)sin(sqrt(c)(t-a)/sqrt(b))1/(sqrt(b)sqrt(c)),s,t,a,a::positive)

>	assume(a_pos::positive)

>	invlaplace(exp(-sa_pos)/(bs^2 + c), s, t)

(2)

>	invlaplace(e^(-sa_pos)/(bs^2 + c), s, t)

(3)

>	algsubs(e^=exp,e^c)

Error, symbol unexpected

Download inttrans_exponent_question.mw

Thanks!

edit: simplified example

Substitution in pde with conjugate?

salim-barzani — Tue, 07 Apr 2026 21:28:05 Z

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

How to find equation involving two odes?

salim-barzani — Tue, 07 Apr 2026 17:22:38 Z

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