## Error, missing operator or `;` in a Code region?...

I can't figure out what Maple is complaining about with this error.  In fact, this is an exact copy/paste from another section in my document that runs fine.  This section, however, generates the error, "Error, missing operator `;`.

I appreciate any help!

for_mapleprimes_help.mw

## empty round brackets in solution...

I am facing a kind of strange problem.  y'=y/x-5^y/x ,   y(0)=5 Cauche equation  it gives empty round brackets () . If I restart Maple engine and perform the same. Kindly help, what is this?

restart;
with(DEtools);

de1 := diff(y(x), x) = y(x)/x - 5^(-y(x)/x)

de1 := diff(y(x), x) = y(x)/x - 5^(-y(x)/x)

an := dsolve({de1, y(0) = 5}, y(x))

an := ()

## Can anyone help me with this Physics issue? Potent...

I have a complicated tensor expression that is defined wtih all indices down. However if i consider a one-up-one-down configuration it appears to introduce new terms that no longer produce the same result as the all down configuration. Not sure what to make of this.

IndexQuestion.mw

## how to sovle this diffenential equation in maple w...

1.mw.....can anyone hlep to sovle this equation...for omega(t)...
(-limit((1 - omega)^(k + 2), omega = 1, left) + 1)/(k + 2) = C*int((1 - `&sigma;_a`*sin(2*pi*N))^k, N = 0 .. N)...in solution..integral didn't get rid

## How do I solve an invalid subscript selector in my...

I keep getting an error: invalid subscript selector on specifically this part of my code:

MuligIndgange := subsop(RemoveList\[i\]=NULL, MuligIndgange).
Whenever I comment out the MuligIndgange := part it works.

I can't for the life of me see why it's happening, and whenever I use this code outside my proc it works aswell.

Any help is appreciated, and if you need more context I'll be happy to give it.

for i to numelems(MuligIndgange) do
if M1[MuligIndgange[i][1], MuligIndgange[i][2]] =/= 0 then
RemoveList := [op(RemoveList), i];
end if;
end do;
for i from numelems(RemoveList) by -1 to 1 do
MuligIndgange := subsop(RemoveList[i] = NULL, MuligIndgange);
end do;

## Can't Locate Setting For Behavior...

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.

## Why Heaviside function work like this?...

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

## What is the most straightforward way in Maple to e...

Dear Power Users, I am trying to master Maple coming from another software. I encounter a problem in finding a simple way to find the best parameters for a fitting function. Would someone be so kind to help me out? Thank you in advance for your willingness to help.

FindOptimizedParametersFit.mw