IIT JEE RELATIONS AND FUNCTIONS Let `S` be the set of all triangles and `R^+` be the set of pos...

Let `S`
be the set of all triangles and `R^+`
be the set of positive real numbers. Then the function `f: SrarrR^+,f(Delta)=a r e aof Delta ,w h e r e in S ,`
is
injective but not surjective.
surjective but not injective
injective as well as surjective
neither injective nor surjective

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