Tutorial Exercise Find a formula for the general term a, of the sequence, assuming that the pattern of the first few terms continues. 1 1 1 (7 9' 11' 13'15m Part 1 of 3 The fractions in the sequence 17 9 11 13 75all have a denominator which is odd odd Part 2 of 3 The denominators are all odd. For example, when n = 2, the denominator is 9 when n 9 = 3, the denominator is 11 11 Part 3 of 3 Formulas for the oth odd number are either 2n + k or 2n - k, where k is an odd number. In order for n to start from 1, the noth term should be written as a, =