MaplePrimes - Unanswered Questions

Maximizing, with a constraint

Alfred_F — Mon, 20 Apr 2026 14:31:08 Z

...and starting values. I want to reproduce the maximum in Maple using the solution structure in the attached file, similar to the old Mathcad method. Instead of using the Euler-Lagrange equation, I want to separately enter the objective function, then the boundary conditions, and finally the starting values for an iteration (as was done in the old Mathcad solution block). I entered the latter into the "maximize" command using the Maple help text. But nothing is being calculated. What am I doing wrong? As I said, I only want a numerically generated approximate solution.test.mw

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

Download test.mw

Shortcut to enter colon-dash?

C_R — Thu, 16 Apr 2026 10:26:20 Z

The command completion facility is real time saver. On the other hand, entering the colon dash is not fluent since it requires searching the keys on the key board.

I was wondering if there is a keyboard shortcut that enters both characters at once.

Replacing placeholder names in nested RootOfs

C_R — Wed, 08 Apr 2026 05:32:52 Z

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

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

there is any code for converting hyper-->trig?

salim-barzani — Sat, 04 Apr 2026 20:41:26 Z

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