Let A and B be non empty sets in R and f : A → B is a bijective function. Statement 1: f is an onto function. Statement 2: There exists a function g : B → A such that fog = I B .

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Let A and B be non empty sets in R and f : A → B is a bijective function. Statement 1: f is an onto function. Statement 2: There exists a function g : B → A such that fog = I B ​ .

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Let A and B be non-empty sets in R . Let f : A → B is bijective function. Clearly statement - 1 is true which says that f is an onto function. Statement − 2 is also true statement but it is not the correct explanation for statement-1

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