Which answer represents the series in sigma notation? - 3 + (-1) + 1+3+5 A:∑j=15 (2j-5)

B:∑j=15 (3j-6)

C:∑j=155j-1

D:∑j=15-3 (13) j-1

Question

15 July, 17:43

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Answers (1)

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Matilda Gay · Answer 1

A:∑j=15 (2j-5)

Step-by-step explanation:

a = - 3

d = - 1 - (-3) = - 1 + 3 = 2

j-th term: a + (j-1) d

-3 + (j - 1) (2)

-3 + 2j - 2

2j - 5

Which answer represents the series in sigma notation? - 3 + (-1) + 1+3+5 A:∑j=15 (2j-5)B:∑j=15 (3j-6)C:∑j=155j-1D:∑j=15-3 (13) j-1