## 240 Reputation

7 years, 252 days

## @tomleslie My question is very simple. I...

@tomleslie My question is very simple. In math when we see A[i]*B[i,j] expression, we know that i is dummy and j is free and we can write it in open form as below, immediately

I am looking how ask from Maple to write indicial expressions in open form, as above?

As you see I have so many indicial expressions like below that have multiple dummy and free indices, and I need the open form of them. But dont know how to get them in Maple??? As you see this a very simple question.

 >
 >
 >
 >
 >
 >
 >
 >
 >

## @mehdibaghaee Let me ask my explicit que...

@mehdibaghaee Let me ask my explicit question;

How to produce rhs of following equation by lhs in maple???

I this way how to assign I,J,M???

## @tomleslie hi I couldnt expand A[i]*B[i...

I couldnt expand A[i]*B[i,j] using commands you mentioned. Could you please expand it with maple?

what about if i=1..4 and j=1..6?

## @mehdibaghaee any comment?...

@mehdibaghaee any comment?

## @Axel Vogt  I am realy amazed why M...

@Axel Vogt
I am realy amazed why Maple do so. I do my proble as below, but still getting error:

 >
 >
 >
 >
 (1)
 >
 >
 >
 >
 >
 (2)
 >
 >
 >
 >
 >

Whyyyy?

## @mehdibaghaee Any comment????!!!!!!...

@mehdibaghaee Any comment????!!!!!!

## @mehdibaghaee Let apply your method to m...

@mehdibaghaee Let apply your method to my problem, but I still get error:

 >
 >
 >
 >
 >
 >
 >
 >
 >

Where the problem is???

## @dharr what do you mean: add known=u0 to...

@dharr what do you mean: add known=u0 to get this.

explain more

## @dharr It seems the output is incorrect ...

@dharr It seems the output is incorrect because we dont see (1/2)*a*(xi+1), (1/2)*b*(eta+1) instead of x,y in u0(x, y, t).

## @dharr Lets apply it to my problem: &n...

@dharr Lets apply it to my problem:

 >
 >
 >
 (1)
 >
 >
 (2)
 >

It is amasing, it decreased the twin integral to single one. WHyy?

Where the problem is?

## @Kitonum I am wondering why Maple do so ...

@Kitonum I am wondering why Maple do so for 3dimentional matrix. I just wanted to pick some elements of 3-D matrix and set them in 2-D matrix using for loops. But it seems Maple not did so, although Matlab did it with similar for loop.

It seems there are many differences between Maple and Matlab 3D matrices and for loops.

Any one know how I can do it in Maple?

## @Kitonum No error. But not logical outpu...

@Kitonum No error. But not logical output for A!!!

>A(1,1)

Vector[column](4, [` 1..3 x 1..3 x 1..5 `*Array, `Data Type: `*anything, `Storage: `*rectangular, `Order: `*Fortran_order])

Why output is so obscure??

What is Vector[column](4, [` 1..3 x 1..3 x 1..5 `*Array, `Data Type: `*anything, `Storage: `*rectangular, `Order: `*Fortran_order])????!!!

## @Kitonum Lets look at A(1,1) >A(1,1)...

@Kitonum Lets look at A(1,1)

>A(1,1)

Vector[column](4, [` 1..3 x 1..3 x 1..5 `*Array, `Data Type: `*anything, `Storage: `*rectangular, `Order: `*Fortran_order])

So whats the problem???

 First 6 7 8 9 Page 8 of 9
﻿