Let (an) be the sequence from the previous question. to show by induction that aₙ =2ⁿ +3 for all natural n,the induction assumption is
a. ak = = 2ᵏ + 3 and ak = + 2a₁ – 3 for some natural k ≥ 1.
b. ak = 2a₁ – 3 for some natural k > 1.
c. ak = 2ᵏ + 3 for some natural k > 1.