Question

is an identity function one to one function​

Answer 1

it can be said that identity function is one-one function

for example

A={1,2,3}

so the function defined fromA*A

R={(1,1),(2,2),(3,3)}

HERE the function is identity function as well as one-one function

but I guess there identity relation not function

and you cannot messup identity and one one function as it is different

Answer 2

Yes, an identity can function from one to the other