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Σn=(n)(n+1)/2 Σ(2n-1)=Σ(2n)-Σ(1) = 2Σn- n= 2n(n+1)/2 -n =n*n
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Summing the N series
You are viewing a single comment's thread. Return to all comments →
Σn=(n)(n+1)/2 Σ(2n-1)=Σ(2n)-Σ(1) = 2Σn- n= 2n(n+1)/2 -n =n*n