A total formula and a block
A total formula and a block
5 marks
TGM Original
A sequence has S_n=2n2+5n. Find the sum of terms 7 through 16 inclusive and the value of term 16.
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:Block sum \(490\); \(u_{16}=67\).
Need help? Join our JC Math tuition classes.
Learn more