Relations and Functions

Relations and Functions

Question

Write the following sets in the roster form :

A = {x : x is an integer and –3 < x < 7}

Answer

A = {x : x is an integer and –3 < x < 7}
rightwards double arrowA = set of all integers between -3 (inclusive) and 7 (exclusive)
rightwards double arrowA = {-3, -2, -1, 0, 1 ,2, 3, 4, 5, 6}
Hence , the roster form of set  A is   {-3, -2, -1, 0, 1 ,2, 3, 4, 5, 6}

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