Ex 8.1, 3 - Chapter 8 Class 11 Sequences and Series

Last updated at April 16, 2024 by

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Ex9.1 , 3 Write the first five terms of the sequences whose nth term is an = 2n We need to find first five terms i.e. a1, a2, a3 , a4, a5 Given an = 2n Putting n = 1 in (1) a1 = 21 = 2 Putting n = 2 in (1) a2 = 22 a2 = 2 2 = 4 Putting n = 3 in (1) a3 = 23 a3 = 2 2 2 = 8 Putting n = 4 in (1) a4 = 24 a4 = 2 2 2 2 = 16 Putting n = 5 in (1) a5 = 25 a5 = 2 2 2 2 2 = 32 Hence first five terms are 2, 4, 8, 16, and 32.

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.