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`lim_(nrarroo) sum_(k=1)^(n)(k^(1//a{n^(a-(1)/(a))+k^(a-(1)/(a))}))/(n^(a+1))` is equal toA. 1B. 2C. 43467D. 4 |
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Answer» Correct Answer - A `underset(nrarroo)(lim)sum_(k=1)^(n)(k^(1//a){n^(a-(1)/(a))+k^(a-(1)/(a))})/(n^(a+1))` `" "=underset(nrarroo)(lim)sum_(k=1)^(n)(1)/(n).{((k)/(n))^(1//a)+((k)/(n))^(a)}` `" "=int_(0)^(1)(x^(1//a)+x^(a))dx` `" "={(x^((1//a)+1))/((1)/(a)+1)+(x^(a+1))/(a+1)}_(0)^(1)` `" "=(a)/(a+1)+(1)/(a+1)=1` |
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