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Let the sum of n, 2n, 3n terms of an A.P...

Let the sum of n, 2n, 3n terms of an A.P. be `S_1,S_2`and `S_3`, respectively, show that `S_3=3(S_2-S_1)`.

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`S_(3)=3(S_(2)-S_(1))`
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MODERN PUBLICATION-SEQUENCES AND SERIES-MISCELLANEOUS EXERCISE ON CHAPTER 11
  1. Let the sum of n, 2n, 3n terms of an A.P. be S1,S2and S3, respectively...

    Text Solution

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