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Home Q & A Board Science-Related Homework Help Mathematics
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Dyhtps Dyhtps
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10 years ago Edited: 10 years ago, Dyhtps
Through this way I can get the answer, but I want to try another method which is like
  n
 ∑  ur  = ∑ [f(r+1)-f(r)]  
r=1                                        

but I couldn’t.. so, some help perhaps?
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