Answer to Question #40792 in Discrete Mathematics for ankita singh

Question #40792

a) Which of the following functions are 1-1 and which are onto? Justify your answer.
i) f : R!R0 given by f (x) = x2 where R0 is the set fx 2 Rjx 0g.
ii) f : R!R given by f (x) = x2+x+1.

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