Telescoping rational sums
Telescoping rational sums
4 marks
Tim Gan Math Original
Find \(\sum_{r=1}^{n}\frac2{r(r+2)}\) in terms of \(n\).[4]
Solution:
Solution locked
680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs tuition enrolment.
Create a free account to practise similar questions.
Answer:\(\frac32-\frac1{n+1}-\frac1{n+2}\)
Need help? Join our JC Math tuition classes.
Learn more