For each arithmetic sequence, determine

a) the value of t1 and d (2 marks)
b) an explicit formula for the general term (2 marks)
c) t20 (2 marks)

7/4, 1, 1/4, -1/2

1 answer

t1 = 7/4
d = -3/4

Tn = 7/4 - 3/4 (n-1)

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