How to compute a particular equation in matlab

I have to evaluate h1(n) using F0. For this i am having an equation such as:

h1(n)=(-1)^n*F0(N1-n);

n= 9 and N1 is an odd delay.

[Walter Roberson]

What is F0?

[Muhammad Usman Saleem]

. I think it is also a variable, give its detail please

[Walter Roberson]

If it is a variable then it would have a finite length and so would have finite indices, but the above appears to be defining a recurrence formula. It would make more sense if F0 is a function, or if there should be a multiplication between F0 and what follows. On the other hand, the user gives n as if it is fixed, which would not make sense for a recurrence formula...

[sakshi ahuja]

F0 is my low pass filter having 9 coeffciients. F0=[-1.9476,0.9267,-0.7980,0.3895,-1.2836,0.7734,-0.4293,0.1318]

Answer 1

[Walter Roberson]

h1 = @(n) (-1).^n .* F0(N1-n);