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20 May, 07:15

Find the 2nd term of an arithmetic sequence with t1 = 4 and t5 = 6.

11/2

5

9/2

4

+5
Answers (1)
  1. 20 May, 08:41
    0
    Tn = t1 + (n-1) * d, so t5 = t1 + 4*d, then d = (t5 - t1) / 4 = 1/2,

    Then t2 = t1 + d = 4+1/2 = 9/2=4.5, so The third one!
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