Why does Talbot[] always return 0?

Questions
1

Hello,
I am newbie in Mathematica and Wolfram Language. The function Talbot shall return Re[h/(2IPi)*ans]] but returns always 0. What is my mistake in parameter passing?

regards - Leo

2

You never really enter the For loop in Talbot. You begin your loop

For[k = 0, k == N, k++, expr]

with N = 64, while k = 0. Because the test k == N is False immediately, you never start the loop. Perhaps you meant k <= N?

Also, I would recommend avoid using N as a variable name in your programs or function definitions, because it is an already defined function in the Wolfram Language.

3

Thank You very much, that were 2 beginner’s mistakes. -
But I have one more problem. I think I did something wrong with the parameter passing, because Talbot[] doesn’t enter numbers to List but expressions with p. - I am confused. :frowning: - As You can see in List below in the notebook.
thanks for help - regards - Leo

4

Well the p’s in your gam never get defined to be anything other than p. I believe gam is their original source.

5

Thanks - I have set gam, Tp and lap into one formula, and it works now.

regards - Leo