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solve If the sequence a1, a2, a3, … an form an A. P., then a1^2 - a2^2 + a3^2 - … + a2n – 1^2 - a2n^2 =

solve If the sequence a1, a2, a3, … an form an A. P.,  then a1^2  - a2^2  + a3^2  - … + a2n – 1^2  - a2n^2  =
 

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
2 years ago
Dear student

a^2 – b^2 = (a+b)(a-b)

here a-b = d ie common difference which can be taken common

so the summation of the sequence is

( d)(Sn)

Regards

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