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What do YOU think it is?!
you're kidding, right?
250/(250+600) = ____
(y/x - x/y) * ((ax+by)/(x+y) - (ax-by)/(x-y)) = (y^2-x^2)/(xy) * (2xy)(b-a) / (x^2-y^2) watch how the factors cancel.
true, since f(1) is just the sum described.
now you try some ...
No work yet on any of these?
with poor text formatting, useless repetition, and oh yeah no indication of any work on your part.
no ideas on any of these?
not much to go on here x^2 = (12n-b)/6 so x = ±√((12n-b)/6) I suspect a typo
what, no work of your own, on any of these? :-(
What, no ideas on any of them? yeah - sample work - >wink wink

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