## How to prevent debug values displaying in the work...

When executing DEBUG within inline code (not within a procedure) the values displayed in successive debug windows (on clicking continue) are added to the end of my worksheet. How can the latter display be prevented?

## how to integrate arccos(x)*arcsin(x)?...

This Anti-derivative of  arccos(x)*arcsin(x), Maple  2020 cannot do that? It seems not difficult.

int(arccos(x)*arcsin(x),x)

In Mathematica, we can easily to get output :

2 x - Sqrt[1 - x^2] ArcSin[x] +  ArcCos[x] (Sqrt[1 - x^2] + x ArcSin[x])

## Startup Code reexecuted when pressing "Execute ent...

When pressing !!! (Execute entire worksheet) it seems to me that startup code is executed.

Is that correct, and if - why is that so?

## How to change coordinate?...

How can I transform the following differential equation from (x,t) to (X,T) coordinate, where, for example, X=x-alpha*t, T=beta*t (alpha and beta are constant)

diff(z, t)+(diff(R, x))*L+A*(diff(L, x))+diff(k, x, x)-(diff(k, t, t)) = 0

Thanks.

## 1D wave equation using d'Alembert's formula and an...

D(u(x,t),t,t)=c^2*D(u(x,t),x,x);

Where u(x,0)=f(x),D[2](u)(x,0)=g(x),u(0,t)=0=u(L,t),L=2

please do this as mentioned above

## Cant plot my procedure...

Dear all

I use Maple 2018 and have following problem:

I define following procedure and want to plot it. However Maple displays the coordinate system but does not plot anything nor gives and error message. Hope you can help.

Thanks

b:=proc(n)
local b,i:
for i from 0 to n do
if i=0 then
b[0]:=0:
elif i=1 then
b[1]:=1:
else
b[i]:=(b[i-1]+b[i-2])/2:
end if:
end do:

return b[n]

end proc:

plot(b,0..10)

## what happened to this question and answer?...

Why was the question and answer deleted for this?

https://www.mapleprimes.com/questions/229329-How-Can-We-Solve-Following-1D-Wave-Equation

## Problem with this proc...

proctes.mw

load this Maple code done'nt work!!!

## How to plot multiple data sets using vectors?...

Hi All

I've been trying to plot multiple data sets using the dataplot function but it doesn't seem to work. It just outputs what I've written. I was wondering is there some package I need to run dataplot? Or is there any other way to plot multiple data sets?

## Maple reports FindAngle between 2 lines greater th...

I'm using Maple2019.

Here is my code:

with(geometry);
point(o, 0, 0);
point(A, 0, 1);
point(d, 0, 2);
point(F, 0.8944271920, 1.4472135960);
line(lOD, [o, d]);
line(lAF, [A, F]);
alpha := FindAngle(lOD, lAF);
=
alpha := 2.034443936

FindAngle is supposed to return the smaller angle between two lines.

Here it is greater than Pi/2

How can that be ?

## Physics Updates" version "642 is  installed but i...

Today I Installed  Physics Updates" version "642 in Maple2020, why does it tell me  it has installed but is not active? How to active it?

Physics:-Version(latest)

`The "Physics Updates" version "642" is installed but is not active. The active version of Physics is within the library D:\\Program Files\\Maple 2020\\lib\\maple.mla, created 2020, March 5, 9:36 hours`

## How can we solve following 1D wave equation with p...

diff(u(x,t),t,t)=c^2*diff(u(x,t),x,x);
Where u(x,0)=f(x),D[2](u)(x,0)=g(x),u(0,t)=0=u(0,1)

I keep getting errors empty sets or only header information using the HTTP or URL package to when trying to download files from here through Maple.

https://github.com/CSSEGISandData/COVID-19/tree/master/csse_covid_19_data/csse_covid_19_time_series