If `f(x)` in inegrable over `[1,2]` then `int_(1)^(2) f(x) dx` is equal to :A. `underset(nrarroo)"lim"(1)/(n)underset(r=1)overset(n)sumf(r/n)`B. `underset(nrarroo)"lim"(1)/(n)underset(r=n+1)overset(2n)sumf(r/n)`C. `underset(nrarroo)"lim"(1)/(n)underset(r=1)overset(n)sumf((r+n)/n)`D. `underset(nrarroo)"lim"1/n underset(r=1)overset(2n)sumf(r/n)`

If `f(x)` in inegrable over `[1,2]` then `int_(1)^(2) f(x) dx` is equa

1.	If `f(x)` in inegrable over `[1,2]` then `int_(1)^(2) f(x) dx` is equal to :A. `underset(nrarroo)"lim"(1)/(n)underset(r=1)overset(n)sumf(r/n)`B. `underset(nrarroo)"lim"(1)/(n)underset(r=n+1)overset(2n)sumf(r/n)`C. `underset(nrarroo)"lim"(1)/(n)underset(r=1)overset(n)sumf((r+n)/n)`D. `underset(nrarroo)"lim"1/n underset(r=1)overset(2n)sumf(r/n)`
Answer» Correct Answer - B::C

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`lim_(nrarroo) sum_(r=0)^(n-1) (1)/(sqrt(n^(2)-r^(2)))`
`lim_(nrarroo) (((n+1)(n+2)"........"3n)/(n^(2n)))^(1//n)` is equal to :A. `(27)/(e^(2))`B. `(9)/(e^(2))`C. `3 log3-2`D. `(18)/(e^(4))`