Mathematics, 21.08.2020 14:01 kana13
8. The sums of first n terms of three arithmetic progressions are S, S, and Ss respectively, The first term of each A. P. is 1 and their common differences are 1, 2 and 3 respectively. Prove that S2 + S3 = 2S2
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8. The sums of first n terms of three arithmetic progressions are S, S, and Ss respectively, The fir...
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