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1)Let. a1 2nn−1n−2nn Q2. Let a123n−1n−2n−3nn

=1,a =3, and for n>2 let a =a+a. Show that a <(7/4)for all natural numbers. 

= 1, a = 2, a = 3, and for each natural number greater than 3, define an = a + a + a. Prove that a < 2 for all n ∈ N. 

Using strong math induction, please be more detail for every step, since I'm having trouble with these two problems so much.