Find the nth term of the arithmetic sequence with a1=-3 d=2 an=?
回答 (3)
2016-08-10 9:50 pm
T(n) = a + (n-1)d
T(1) = -3 + (1-1)2 = 3
T(1) = -3 + (1-1)2 = 3
2016-08-10 10:35 pm
Un = a + (n - 1) d
Un = - 3 + 2 (n - 1)
Un = 2n - 5
Un = - 3 + 2 (n - 1)
Un = 2n - 5
2016-08-10 10:00 pm
nth term --> a + (n - 1)d
so, with a = -3 and d = 2 we have:
-3 + 2(n - 1) => 2n - 5
:)>
so, with a = -3 and d = 2 we have:
-3 + 2(n - 1) => 2n - 5
:)>
收錄日期: 2021-04-21 19:32:34
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