Math, asked by arjun21868, 11 months ago


If the sum of first K terms of an A.P is 3K-K and its common difference is 6. Find the first term.​

Answers

Answered by Anonymous
6

Answer:

s(k) =  \frac{k(2a + (k - 1)6)}{2}  = 3k {}^{2}  - k \\  =  > 2ak + 6k {}^{2}  - 6k = 6k {}^{2}  - 2k \\  =  > 2ak = 4k \\  =  > a = 2

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Answered by navysh17
1

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