## 40 Reputation

1 years, 352 days

## Find coefficents for Fourier Series...

Maple

Hello!

There are lot's of packages and instructions how to expand function to Fourier Series but in 2006, 2010

## Determinant as a function...

Maple 2020

Hello!

Could you help me plesase, I have a matrix like this:

And I want to get determinant of this matrix as function f(w1,w2) but when I use Determinant I always get something like this:

## Convert matrix indexes...

Maple 2020

Hello!

I have a matrix and all elements has two indexes. For example 3x3 case:

1,1 1,2 1,3

2,1 2,2 2,3

3,1 3,2 3,3

So if I want to travers this matrix in zig-zag way and fill it with increasing numbers I will get this matrix:

1 2 6

3 5 7

4 8 9

From 1 to 2,3 and 4,5,6 ...

We have 9 elemets in this order:

1 - (1,1); 2 - (1,2); 3 - (2,1); 4 - (3,1); 5 - (2,2); 6 - (1,3); 7 - (2,3); 8 - (3,2); 9 - (3,3).

The question is - do we have a way to convert two indexes in one digit like (3,1) -> 4 or (2,3) -> 7

Thank you!

Could you help me please if there is a way to convert to

## Plot function with real domain and compl...

Maple 2020

Hello!

Could you help me please to plot a fuction with domain and complex range (Maple 2020.1). For example:

f := (x, w) -> exp(w*x*I)

x,w are real numbers

## Usefull indexes in function...

Maple 2020

Hello!

I've just want to use indexes in functions, like this (Maple 2020.1)

But I can't get the result of it:

f[1,1](2,2)

Maple show me not 4, but the same function.

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