(ii) Find T(r+1)/T(r)
(iii) Put T(r+1)/T(r)>1
(iv) Solve the inequality for r to get an inequality of the form r
If m is an integer, the mth and (m+1)th terms are equal in magnitude and these two are the greatest terms.
If m is not an integer, then obtain integral part of m, say, k. In this case (k+1) term is the greatest term