Question

Check the injectivity and surjectivity of the following functions

(a) f : ℕ → ℕ defined by () =

2

(b) f : ℤ → ℤ defined by () =

2

(c) f : ℝ → ℝ defined by () =

2

(d) f : ℕ → ℕ defined by () =

3

(e) f : ℤ → ℤ defined by () =

3

(f) f : ℝ → ℝ defined by () =

3​

Answer 1

Answer:

c

Step-by-step explanation:

it has been done by mistake in my dear