MaplePrimes Questions

Simple question (I'm sure) here.  I have one worksheet where the variable does not show up in the ouput of an assignment like this:

whereas I was expecting the output to include the variable being assigned like this in most other worksheets:

I am having some difficulting locating the cause (and therefore the setting) to have the behavior set back to including the variable name in the ouput.  Thanks in advance for your help.

Hi,

I successfully animated my trigonometric problem on the wheel. Just a few details: 1) The 'gridlines' option deactivates when using the 'tickmarks' option. 2) The animation takes time to compile. Any suggestions? Thank you for your advice on optimizing this animation

RoueAnimation.mw

I want to construct equation  equation LT−TL=0, where L and T represent partial differential operators as

L = u^2 * ∂^2/∂x^2 + ∂/∂y

T = 4u^3 * ∂^3/∂x^3 + (6u^2u_x - 6u^2 * ∂^(-1)/∂x(u_y/u^2)) * ∂/∂x - ∂/∂t.

Could you please provide Maple code to accomplish this task??

Hi everyone,

I am trying to solve a coupled ODE with variables c(T) and p__c(T) and these equations have a quantum parameter in them called beta__c which is a constant. The solutions to both p__c and c should naturally have beta__c in them, but in Maple they don't (in p__c particularly), while in Mathematica they do (beta2 in Mathematica is the same as beta__c in Maple). This is extremely important since we don't have the boundary conditions to fix the constants of integration of the solutions to p__c and c from ODEs, but we can use the the classical limit, beta__c -->0, of the ODE solutions we obtained, to match the classical solutions and ODE solutions, to fix the integration constants c1 and c2.

Below I am attaching the solutions of Maple and Mathematica. Can you advise how can I get solutions similar to Mathematica that have beta__c in them (particularly in p__c) such that one can actually take the  limit beta__c -->0 ?
In the Mathematica file beta2 is the same as beta__c in Maple.

Here is the Maple solution:

and here is the Mathematica solution which clearly has beta1 in both pc and c and also one can take the limit beta1-->0:

Thanks!

det_roots.docx

How to find the roots of the equation ?

like if the roots of the equations are m ,n,o,p then the value of these roots in terms of λ0  λ1  λ2  λ3  µ1  µ2 and  µ3

How to obtain the commutator table of the infinitesimal generators?
Can we obtain a commutator table by using any inbuild command in pdetools?

Calculate the values of the following determinants

I have sets of names with numeric parts like X:={x12, x1, x3, x15, x2, x9}.

How can I sort X based on the numeric part so Xsort:={x1, x2, x3, x9, x12, x15}.

Thank you.

Hi.

Why maple can not compute integral?

Thanks

int.mw

Is this internal error expected? Why does it happen? Reported to Maplesoft just in case.

``

interface(version);

`Standard Worksheet Interface, Maple 2024.0, Windows 10, March 01 2024 Build ID 1794891`

restart;

189352

e:= RootOf(csc(_Z));
simplify(e);

RootOf(csc(_Z))

Error, (in simplify/trig/do/1) expression independent of, _Z

e:= RootOf(csc(x));
simplify(e);

RootOf(csc(_Z))

Error, (in simplify/trig/do/1) expression independent of, _Z

 

 

Download simplify_Z_error_maple_2024_march_22_2024.mw

ps. Reported to Maplesoft just in case.

Only for my understanding. In the following I need to use expand to apply division to list elements when the divisor is a name:

[a, b]*(1/2)

[(1/2)*a, (1/2)*b]

(1)

[a, b]/c

[a, b]/c

(2)

expand([a, b]/c)

[a/c, b/c]

(3)

NULL

Does in this case automatic simplification make a difference between numbers and names? (Probably this is explained somewhere.)

Download div_of_list.mw

Why does the Heaviside function work this way? Is this some kind of bug? The integral of this graph over the interval -1..1 cannot be equal to zero.

int_of_V-func.mw

 

I do not like this feature at all. called Scrollable Matrices:

https://mapleprimes.com/maplesoftblog/224789-Discover-Whats-New-In-Maple-2024

Is there a way to turn it off? 

In Maple 2024 when I display a wide matrix, it no longer wraps around if the worksheet window width was smaller as it did in Maple 2023. I prefer the 2023 behavior.

A:=Matrix(3,4,{(1, 1) = (y(x) = RootOf(-Intat(1/(_a^(3/2)+1),_a = _Z+x)+x+Intat(1/
(_a^(3/2)+1),_a = 0))), (1, 2) = "explicit", (1, 3) = "", (1, 4) = false, (2, 1
) = (y(x) = -1/2+1/2*I*3^(1/2)-x), (2, 2) = "explicit", (2, 3) = "", (2, 4) = 
false, (3, 1) = (x = -2/3*ln(((y(x)+x)^(3/2))^(1/3)+1)+1/3*ln(((y(x)+x)^(3/2))^
(2/3)-((y(x)+x)^(3/2))^(1/3)+1)+2/3*3^(1/2)*arctan(1/3*(2*((y(x)+x)^(3/2))^(1/3
)-1)*3^(1/2))+1/9*3^(1/2)*Pi), (3, 2) = "implicit", (3, 3) = "", (3, 4) = true}
,datatype = anything,storage = rectangular,order = Fortran_order,shape = []);

 

Screen shot on Maple 2023

 

Screen shot on Maple 2024

I looked at Tools->options->Display and Interface but see nothing there to turn it off.

Maple 2024 on windows 10.

Windows 10 64bit

If I double click on a  file to open it from explorer  i.e. launch Maple, it is 50/50 whether Maple hangs on opening the file and I have to kill it in the Task Manager. This only happens the 1st time I try to open the file. Subsequent clicks on it will open it. If Maple is already open the problem does not happen.  The problem willl also be there after the PC is restarted. Has anyone else noticed this?

Dear Users!

I hope everyone here is fine. In the attached file I have a list of points in three dimensions. I want to plot surfaceplot (also in Dimension=2) of only those points which are less than 1.

But I want to plot the density plot for all points with the range on x-axes 5 to 15 and the range on y-axes 50-1000

Help.mw

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