Ex 1.1, 5 - Chapter 1 Class 11 Sets - Part 3

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Ex 1.1, 5 List all the elements of the following sets: (iii) C = {x: x is an integer, x2 ≤ 4} Integers = ......–4, –3, –2, –1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10…. Thus, C = {–2, –1, 0, 1, 2} (0)2 = 0 (1)2 = 1 (2)2 = 4 (3)2 = 9 (–1)2 = 1 (–2)2 = 4 (–3)2 = 9 x2 = 4 x = ± 2 So, – 2 ≤ x ≤ 2

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