If `Dr=|[r,n+1,1],[r^2,2n-1,(2n+1)/3],[r^3,3n+2,(n(n+1))/2]|`, show that `sum_(r=1)^n Dr=0`
125 views · Published 13 October 2018 · 3:51 · Indexed 21 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `Dr=|[r,n+1,1],[r^2,2n-1,(2n+1)/3],[r^3,3n+2,(n(n+1))/2]|`, show that `sum_(r=1)^n Dr=0`
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