Question

Give an example of a function which is
1) one to one but not onto
2) one to one and onto
3) neither 1-1 nor onto
4) onto but not one to one

Answer 1

Answer:

Hence, the given function is One-one. x=12=0.5, which cannot be true as x∈N as supposed in solution. Hence, the given function is not onto. So, f(x)=2x is an example of One-one but not onto function.