1. Do the following functions define DFs? if x < 0 (i) F(x)= x 1 if 0 < x < (ii) F(x) = if x > 1/1/ G 1 x if x ≤ 1 if x > 1 (iii) F(x)= { -e-2 if x < 0 if x ≥ 0

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