Question

show that function f:N:N defined by f(x) = 2x-1 is one to one but not onto​

Answer 1

Answer:

Here all natural numbers do not come in the range of f(x).

For example : at f(x)=2 , x=1.5 which is not a natural number and thus is not in the domain of the function.  

Step-by-step explanation: