1.

x= {1, 2, 3, 4}, y= {1, 5, 9, 11, 15, 16} which of the following relations are functions from x to y ? (1) f_(1)= {(1, 1) (2,11) (3,1) (4, 15)} (2) f_(2)= {(1, 1) (2,7)(3,5)} (3) f_(3)= {(1, 5) (2,9) (3, 1) (4, 5) (2, 11)}

Answer»


ANSWER :Only `f_(1) is a FUNCTION


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