A-level Maths · Sequences and series

Sum of an arithmetic series

Find the first term and common difference, then use S = n/2 (2a + (n − 1)d).

0 correct out of 0Streak: 0

Question 1

In an arithmetic series, u4=12u_{4} = 12 and u6=18u_{6} = 18. Find the sum of the first 3434 terms of the series.

You can type 4.53, 3.2e-5, 3.2 × 10^-5 or 7/3.

Your progress is kept on this device only. Nothing you type is sent to us.

Stop spending Sunday on Monday's lesson.

Free to start, no card. Your first lesson is about two minutes away.

Start free