Consider the harmonic numbers Hn = 1 1 1 2 1 3 · · · 1/n. Last week you wrote a recursive Scheme function (named harmonic) which, given a number n, computes Hn. Revise your harmonic function, keeping the name (harmonic n), to take advantage of the sum function seen in the textbook.

Of course, your new and improved definition of harmonic should not be recursive itself and should rely on sum to do the hard work.

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(define (sum term a next b)

(if (> a b)

0

( (term a) (sum term (next a) next b))))

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I just don't understand what term and next are supposed to be doing and I really don't understand what the last line of the code "( (term a) (sum term (next a) next b))))" is saying, would anyone be able to ELI5 what the last line is saying and how to do this? Thank you!!