Prove, or provide a counterexample to disprove, the followin…
Prove, or provide a counterexample to disprove, the following statement: “The function f : ℕ ⟶ ℕ be defined by f(n) = n2 + 5 is onto.” Use good proof technique. Grading rubric:1 pt. State the definition of onto at the beginning, then prove or disprove.1 pt. State any givens and assumptions.1 pt. Clearly explain your reasoning.1 pt. Remember to state the final conclusion at the end of the proof. Note: To avoid the need for typing superscript exponents, you may use the expression ‘n^2’ or ‘n-squared’ to represent n2.