I am trying to get WolframAlpha to solve a recurrence and evaluate a result in one query.
For example: If
f == 0, f == 1 f[i] == (1/2)*f[i+1] + (1/2)*f[i-1]
f equals to .. ?
It gives me an analytical result for
f, but does not evaluate
How would I get it to evaluate
f on this same query ?