If `a_1,a_,a_3...a_n` are in A.P then prove that `a_1^2-a_2^2+a_3^2-a_4^2+....a_(2k-1)^2-a_(2k
51 views · Published 12 October 2018 · 3:05 · Indexed 2 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `a_1,a_,a_3...a_n` are in A.P then prove that `a_1^2-a_2^2+a_3^2-a_4^2+....a_(2k-1)^2-a_(2k)^2= (k/(2k-1))(a_1^2-a_(2k)^2)`
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