# Answer to Question #44581 in Calculus for Anurodh

Question #44581

a) Which of the following functions are 1-1 and which are onto? Justify your answer.

i) f : R - R^>=0 given by f (x) = x^2 where R^>=0 is the set {x ϵ Rjx >= 0}

ii) f : R - R given by f (x) = x^2+x+1.

i) f : R - R^>=0 given by f (x) = x^2 where R^>=0 is the set {x ϵ Rjx >= 0}

ii) f : R - R given by f (x) = x^2+x+1.

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