For each of these arithmetic sequences: i State and

MATHEMATICS · Multi-part · A Level · Mathematics · Sequences and series · Sequences and series

Problem

For each of these arithmetic sequences: i State u1u_1 and dd. ii Find the formula for the general term unu_n. iii Find the 15th term of the sequence. (1) a 19, 25, 31, 37, .... (2) d 31, 36, 41, 46, .... (3) b 101, 97, 93, 89, .... (4) e 5, -3, -11, -19, .... (5) c 8,912,11,1212,…8, 9\frac{1}{2}, 11, 12\frac{1}{2}, \dots (6) f a,a+d,a+2d,a+3d,…a, a + d, a + 2d, a + 3d, \dots

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