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Find recurrence relation please help!

I'm sorry but the question is in the attachment because I seem to have a problem uploading equations in fractions. If you refer to the question, I'm not sure whether the 'above recurrence relation' refers to the one in V_{n} or f(V_{n}), but assuming it's the one in f(V_{n}), I tried comparing the gradients of the tangent [f'(V_{n}) = f(V_{n})/ (V_{n} - V_{n+1})] but I don't know how to proceed from there.

Please help me and sorry for the inconvenience caused!

Re: Find recurrence relation please help!

Quote:

Originally Posted by

**louisatanhuiying** I'm not sure whether the 'above recurrence relation' refers to the one in V_{n} or f(V_{n})

The question uses the phrase "recurrence relation" only twice, and the second occurrence refers to the first one. To derive this recurrence relation, you need to know what f is. I think you need to apply Newton's method to this f.