Sequence and series
Sequence and series (Questions)
The nth term in an arithmetic progression is: an = a + (n-1)d
sum of the nth terms in an arithmetic progression is Sn = n/2(2a + (n-1)d)
A. Solve the following arithmetic progression questions.
- If the 10th term is 21 while the 12nd term is 25, what is the common difference (d) and also the second terms of the series.
- Find the 10th term of the series (Given that the sum of the nth terms in an arithmetic progression is Sn = 3n + n2).
Sequence and series (Answers)
- d = 2, a2 = 5
- a5 = 22
About Dr Loo – O-level & JC H2 math tutor
I am Dr Loo, a PhD holder with 8 years of teaching experience on secondary school and tertiary level. In addition, I also received teaching training under tertiary setting. Furthermore, I have publisehd 5 research papers on international peer reviewed journals. I do provide JC Math Tuition (H1 Math Tuition & H2 Math Tuition).
Thus, for those who are looking for a JC Math Tutor (H1 Math tutor or H2 Math tutor) as well as O-level Math Tutor, you may contact me for my math tuition in Singapore. I can be contacted through SMS/Whatsapp/Telegram at +65-85483705.