Discrete MathTrue False question IF False give a counterexam

(Discrete Math)(True, False question. IF False, give a counterexample.)

(Discrete Math)(True, False question. IF False, give a counterexample.) Let f must be onto f: Y right arrow X is a function, then Y an infinite set. If f be a finite set and

Solution

False

y=x²

Let Input set [0,5]

Output set - R

Now all outputs do ont have preimages in the degined domain of x