## Failed to load the worksheet: What could be the re...

For the attached worksheet "insert contents" worked two month ago. My computer settings have not changed since.

The same happens with an empty worksheet (document mode) created with 2022.2

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/Unit_of_t.mw .

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/empty.mw .

## "You have entered an invalid Maple expression" on ...

There is a button at the top right corner that has an icon that seems to say 4pi/3. When I hover over it is says "Maple Math". I click on it, and insert an expression that I copy directly from Maple: a simple definition of a function. There is an error that says "You have entered an invalid Maple expression". Why? The function is defined as z__1 := (x,y) -> x+y. Perhaps the issue is the subscript. I don't know but the UI does not tell me.

Here is an example that does not give an error in the form when I click the aforementioned "Maple Math" button. However, what I see below is a broken icon and the equation f := (x,y) -> x + y (exactly like this).

I am bewildered by the brokenness of this UI.

## Where is the question about the pseudo inverse of ...

Not the first time that a question (OP's name  PhearunSeng ) is removed as I am writing an answer (I guess other people have already faced the same inconvenience).
Why doesn't exist a mechanism which prevents removing, deleting, displacing a question where someone (here Carl) has akready given an answer ???

Whatever the reason, here is my answer

Title: Can be done quickly if you write the matrix in a more abstract form

MyKGff := Matrix(5, 5,
{
(1, 1) = A+(1/63368)*B,
(1, 2) = -(1/63368)*B,
(1, 3) = -(1/39605)*B,
(1, 4) = 0,
(1, 5) = 0,
(2, 1) = -(1/63368)*B,
(2, 2) = (1/63368)*B+C,
(2, 3) = (1/39605)*B,
(2, 4) = -C,
(2, 5) = 0,
(3, 1) = -(1/39605)*B,
(3, 2) = (1/39605)*B,
(3, 3) = (8/198025)*B,
(3, 4) = 0,
(3, 5) = 0,
(4, 1) = 0,
(4, 2) = -C,
(4, 3) = 0,
(4, 4) = C+(1/63368)*F,
(4, 5) = -(1/39605)*F,
(5, 1) = 0,
(5, 2) = 0,
(5, 3) = 0,
(5, 4) = -(1/39605)*F,
(5, 5) = (8/198025)*F
}
);


Then (Maple 2015.2)

PseudoInverse := CodeTools:-Usage( LinearAlgebra:-MatrixInverse(MyKGff, method=pseudo) ):
memory used=28.38MiB, alloc change=68.00MiB, cpu time=312.00ms, real time=314.00ms, gc time=24.90ms


To recover the pseudo inverse with original data do

Rewrite := [
A = (D__pile*W[1] . E__c)/3000,
B = (D__pile*W[2] . E__c)*89^(1/2),
C = (D__pile*W[3] . E__c)/1000,
F = (D__pile*W[4] . E__c)*89^(1/2)
]:

eval(PseudoInverse, Rewrite):

InverseMatrix_mmcdara.mw

## where are the question and my answer ???...

@ASHAN's question was about a linestyle which wasn't displayed as expected.

Maybe a handling error on my part?

To ASHAN:

## FIX MAPLEPRIMES SEARCH

MaplePrimes

There is something wrong with the search in mapleprimes.

I noted one users comment last week about using the search to find something being very difficult to find.  The results don't often match the search.  Only just this morning I was looking for something and the results were less than satisfying often pointing to a list of more results which didn't seem to help.

This has been a problem for a long time, is this going to be looked at or fixed soon?

My old company went belly up during the COVID period. My old email address is now dead as a doornail.

I can login to MaplePrimes using the old email address, post questions, etc.

However, I can't change my account email address becaue Maplesoft sends a verification message to the OLD email address.

If I post a question, I can read the replies here. However, any replies sent to my OLD email address just disappear.

How do I change my account email address under this situation?

Thanks.

## is there a problem with MaplePrime?...

Is there a problem with Maple primes?

When I want to ask a question, the input panel is disabled and not possible to type into it. Here is screen shot.

Same when I wanted to make a reply to an answer. I can not type into the window that shows. It is like disabled.

I found I only can write here, in the post section.

What is the problem?

## Test post of worksheet with underscores...

 the quick brown fox jumps over the lazy dog

## Translate Mathematica read binary file command...

About a half hour ago, there was a Post titled "Read binary file" from a new user. I converted it to a Question. Now that I want to Answer the Question, I can't find it. If you are the author of that Question, and you still want an answer, please post it again, but put it in the Questions area.

(I think that there may be a bug in MaplePrimes that makes this happen. I've had it happen several times before.)

Anyway, please respond to this regardless of what you want regarding the Question. That'll help me figure out what went wrong.

## Why isn't Maple Flow a choice under Maple Products...

I'm trying to move to Maple Flow after a long time using Mathcad.  (Long enough that I remember when Maple was the symbolic engine in Mathcad.)  So I'm looking for the user's forum (like the old collaboratory), and I thought that MaplePrimes might be that resource.  Under the heading of "Products" I find a list of many different programs--every version of Maple and MapleSim--but Maple Flow is not to be found.

I decided to ask why, only to discover that it magically appears when the question window asks me to "categorize your question" to get it answered faster.  So I guess my question really is, "How do I find information  and questions specific to Maple Flow?"

## Is it possible to write latex equations in MaplePr...

Is it possible to write latex equations in MaplePrimes?

Googling for this and also searching here in MaplePrimes didn't turn up any obvious answers to this question. I am coming from using Math Stack Exchange, and I'd like to ask a question about how to write a particular function in Maple.

$f(x)=\begin{cases} 5, x \neq 0 \\ 0, x=0 \end{cases}$

## Mapleprimes needs an update

MaplePrimes

Mapleprimes appears unfinished and is in need of some maintenance.

If you click on the products option page there are several products missing from the sort (MapleSim, MapleFlow, MapleLearn).  Also clicking on questions gives you only a maplesim and maple option.

Those are some of the things I would like mapleprimes to please update.

## Disappearance of a question...

A question by @Shameera  I was working on has disapeared meanwhile.
It was related to this previous thread 233822-How--To-Solve-This-Equation-By-Using but has not been displaced in it.
Did a regolaror do this or was it  @Shameera ?

## restricted search of Questions

by: MaplePrimes

I ask a lot of question on MaplePrimes.

I can get  a list of all my question.

I like to search in this list to people on the forum who has answered my questions

Is this possible to add this functionality in MaplePrimes?

Jan